The category covers several different products. Some simulate how a part could be made from its geometry. Some give estimators process models for machining or fabrication. Some govern cost structures across a global enterprise. ERP products build quote costs from items, routings and supplier data. Bourne assembles the customer-specific cost case across those systems.
Choose the calculation engine that matches the hardest cost driver. Then test whether the complete estimate can survive commercial review, a customer revision and the handoff to the won order.
Name the estimate before you choose the software
“Cost estimate” can mean the expected cost of a customer bid, a supplier should-cost, an early design target, a standard cost for inventory or the actual cost after production. Those numbers use different evidence and answer different decisions. Mixing them creates arguments that no software can settle.
Write the estimate type, cost object, date, quantity, currency, location, product revision and decision on the first page. A sales estimator needs a cost basis for the offered scope and date. A buyer challenging a supplier needs a defensible process model. A design engineer needs a fast comparison between alternatives. Finance needs a governed basis that reconciles to actual results.
| Estimate | Question it answers | Evidence it needs |
|---|---|---|
| Customer quote cost | What will this offered scope cost at the promised quantity and date? | Configuration, BOM, routing, supplier quotes, engineering scope, delivery and risk |
| Should-cost | What should a part or assembly cost under a stated process and factory model? | Geometry, material, routing, cycle time, yield, labor, machine and overhead assumptions |
| Target cost | What must the design cost for the product or program to meet its business case? | Target price, margin, volume, investment and lifecycle plan |
| Standard cost | What cost will ERP use for inventory and variance accounting? | Approved material, labor, burden and effective date |
| Actual or post cost | What did the completed job consume? | Issued material, reported labor, machine time, purchase invoices, scrap and charges |
Define the cost object and scope boundary
Start with the product or project structure that the customer will buy. A configured machine may include the base unit, controls, bought-out accessories, documentation, packaging, freight, site work, commissioning, training, warranty and one-time engineering. Part-cost software can calculate one manufactured component perfectly while missing half of that commercial scope.
Tie the estimate to the customer requirement and product revision. If the quote covers three machines and one shared control cabinet, show that structure. If a line includes installation at two sites, separate the site costs. If the customer provides a motor or foundation, state that exclusion. The estimate should use the same scope breakdown as the proposal and eventual order.
| Boundary question | What to record |
|---|---|
| What will we deliver? | Equipment, options, spares, documents, services and contract deliverables |
| What will we make? | Manufactured parts, assemblies, routings, tooling and inspection |
| What will we buy? | Components, subcontract processes, freight, travel and third-party services |
| What happens once? | Engineering, programming, tooling, qualification, setup and project management |
| What repeats per unit? | Material, production labor, machine time, inspection, packaging and warranty basis |
| What remains uncertain? | Open technical decisions, supplier validity, rates, schedule and customer conditions |
Build the cost stack so another estimator can audit it
Each cost line needs a quantity, rate, unit, source, effective date, revision and owner. Separate facts from calculated values and assumptions. A supplier quote is a fact within its stated scope and validity. A machining time produced by a process model is a calculated value. A temporary allowance for an unknown coating process is an assumption.
Do not hide material uncertainty in a general contingency or bury engineering in overhead. The reviewer should see which input moves the total and which team can improve it. That structure also lets the estimate reopen only the affected lines when the customer changes quantity, material, delivery or scope.
| Cost block | Typical inputs | Control that matters |
|---|---|---|
| Material | Net weight, stock form, buy weight, price, yield and scrap recovery | Material specification, source date and unit conversion |
| Manufacturing | Setup, run time, labor, machine, tooling, consumables and inspection | Routing version, rate basis and quantity |
| Purchased content | Supplier price, minimum order, tooling, freight, duty and lead time | Quoted scope, validity, currency and selected supplier |
| Engineering | Design, analysis, programming, documentation and approval hours | Work breakdown, role, rate and reuse assumption |
| Delivery and site | Packaging, freight, travel, installation, commissioning and training | Destination, schedule, crew and customer responsibility |
| Commercial risk | Warranty, bonds, insurance, escalation and named technical risks | Explicit driver, probability or scenario and approval |
| Overhead and margin | Factory burden, SG&A allocation and target return | Finance-owned method and effective date |
Follow one compressor package from scope to cost
An OEM receives an RFQ for two oil-free compressor packages for a food plant. Each package needs a compressor, 250-kilowatt motor, variable-speed drive, stainless process piping, acoustic enclosure, controls, factory test, export packing and site commissioning. The customer requires delivery in thirty weeks and supplies a site layout with a tight maintenance envelope.
The base compressor and controls repeat. The enclosure needs a size change. Stainless piping depends on the final layout. The motor and drive come from suppliers. Commissioning requires two technicians and international travel. The estimate must combine repeat product data, new engineering, supplier evidence and schedule risk.
| Estimate line | Basis | What can still change it |
|---|---|---|
| Compressor and base assembly | Current configured BOM and routing for two units | Final duty point and selected options |
| Motor and drive | Supplier quote for quantity two, valid 30 days | Lead time, currency and customer harmonic requirement |
| Stainless piping | Preliminary takeoff, weld count and shop routing | Approved layout, supports and inspection class |
| Acoustic enclosure | Prior design adjusted for the larger maintenance envelope | Noise calculation and final panel geometry |
| Engineering | Named work packages for layout, acoustics, piping, controls and documents | Customer comments and reuse from the standard package |
| Factory test | Test-bay setup, run hours, utilities and customer witness | Witness notice, retest clause and acceptance criteria |
| Commissioning | Two technicians, five days on site, travel and per diem | Site readiness, visas and customer schedule |
| Risk | Scenario for expedited drive and one extra engineering review | Supplier commitment and technical clarification closure |
A useful system lets the estimator open any line, inspect its source and change its scenario. When the customer sends a revised layout, the piping, enclosure, engineering and delivery work should reopen. The standard compressor cost should stay stable unless the revision changes its duty or configuration.
Choose the calculation engine that matches the work
No single estimating method handles every line equally well. Use geometry and process simulation for parts whose shape and manufacturing route drive cost. Use governed product-cost models for assemblies and enterprise comparisons. Use ERP methods for known items, routings, rates and historical jobs. Use supplier quotes for bought-out scope. Use a workflow product to join those answers for a customer bid.
| Costing problem | Strongest method | Weakness to manage |
|---|---|---|
| Machined, cast, forged, molded or fabricated part from CAD | Geometry and manufacturing-process simulation | Factory calibration, non-geometric requirements and commercial scope |
| Estimator builds a routing from known processes | Manufacturing cost-model library | Model maintenance and estimator judgment |
| Global product, tool and supplier cost governance | Enterprise product cost management | Implementation, master data and specialist ownership |
| Known product close to production | ERP estimate from BOM, routing, rates and supplier data | Early concepts, geometry analysis and cross-system scope |
| Configured or engineered customer package | Combined calculation using specialist engines and source records | Workflow, revisions, exceptions and approval |
Use geometry simulation when the part drives the answer
aPriori Manufacturing Process Models use 3D CAD geometry to identify cost drivers and simulate manufacturing routings across processes such as machining, casting, forging, fabrication, plastics and assembly. Its Digital Factory combines process models with regional material, labor, machine and overhead data. The vendor states that its baseline factories use general manufacturing practices and average rates; customers can configure them to represent their own plants or trusted suppliers.
That distinction matters. A physics-based result can be rigorous and still miss the factory that will make the part. Validate machine capability, stock form, material price, process sequence, setup policy, utilization, yield, labor model, overhead and location. Record any override so another person can reproduce the estimate.
aPriori is a strong candidate for design-to-cost, manufacturability, routing comparison and should-cost analysis when CAD geometry contains the main cost signal. It will not automatically know the customer’s packaging clause, supplier commitment, project engineering hours or liquidated-damages exposure. Those belong in the complete bid estimate around the part model.
| Geometry-model test | What to verify |
|---|---|
| Feature recognition | Holes, pockets, bends, welds, surfaces, tolerances and material form |
| Routing | Feasible machine and process sequence for the part and volume |
| Cycle time | Speeds, feeds, handling, setup, secondary work and inspection |
| Material | Buy shape, nesting or utilization, scrap and recovery |
| Factory | Region, machine capability, labor, rates, overhead and capacity assumptions |
| Output | Cost breakdown, manufacturability issues, alternatives and reproducible settings |
Use estimator models when process knowledge drives the answer
Costimator provides manufacturing cost models for processes such as machining and sheet-metal fabrication. The estimator selects or builds the process plan, applies the shop’s machines and rates, and produces cycle-time and cost results. This approach fits manufacturers that quote parts from drawings, models and process knowledge and want a consistent alternative to estimator spreadsheets.
Test the exact processes your shop sells. A large model library adds little if the critical heat treatment, inspection, weld procedure, tooling policy or outside service still lives in a private worksheet. Ask how your team edits a model, verifies a change and preserves the calculation version used in a submitted quote.
A process-model product and a geometry-simulation product can overlap. The practical difference is how much the engine derives automatically from CAD, how much the estimator declares, and how closely the model represents your equipment and methods. Give both vendors the same completed jobs and compare input effort, routing quality and variance from actual cost.
Use enterprise product costing when consistency is the problem
Teamcenter Product Cost Management covers product, tool and quotation cost, profitability, purchased-part analysis and product carbon footprint. Siemens describes bottom-up process models, what-if comparisons and the use of benchmark data for material, machines and global labor. Its integration gateways reuse ERP and PLM data such as standard parts, material costs, cost-center rates, BOMs and routings.
FACTON EPC focuses on standardized enterprise product costing across development, purchasing, controlling and sales. Its current documentation covers component and project-level costing schemes, should-cost models, variants, quotation calculations, profitability and linked costing types for customers, locations and suppliers.
These products fit organizations that need common cost methods across product lifecycles, plants and functions. They require more than an estimator license. The business must govern cost models, reference data, accounting logic, versions and access. Test how a local estimator handles a customer deadline without breaking the global method or exporting the calculation to Excel.
| Enterprise test | Question |
|---|---|
| Cost structure | Can finance define the method while estimators see the drivers they can change? |
| Master data | Which ERP, PLM and external values feed the model, and how old are they? |
| Reuse | Can teams reuse an assembly or process without copying a stale calculation? |
| Scenario | Can the estimator compare plant, supplier, volume, material and design choices? |
| Version | Can a submitted quote reopen under the exact method and data used at release? |
| Actual feedback | Can the team compare estimate, standard, purchase and actual job cost? |
Treat supplier evidence as part of the estimate
Bought-out equipment and subcontract work can dominate an industrial OEM quote. Store the supplier, quoted part or scope, quantity, unit, currency, Incoterm, freight, tooling, minimum order, validity, lead time and exceptions with the cost line. A number copied from an email does not give the commercial team enough evidence to promise price or delivery.
Separate a current quote from a catalog price, last purchase price, indexed estimate and engineering allowance. The estimator may use any of them, but the basis must remain visible. Set the line to reopen when its validity expires, the quantity changes, the specification changes or the requested delivery moves outside the supplier commitment.
The supplier RFQ workflow shows how Bourne sends the package, compares scope and returns the selected response to the cost build. The estimate should preserve rejected alternatives when they explain lead-time, technical or commercial risk.
| Supplier basis | Use | Warning |
|---|---|---|
| Current firm quote | Selected scope within validity and stated conditions | Recheck any customer revision or schedule change |
| Budgetary quote | Early estimate or option comparison | Do not present it as committed procurement cost |
| Last purchase price | Repeat part with unchanged scope and market | Age, quantity and contract may make it irrelevant |
| Indexed prior price | Temporary estimate when the relationship remains comparable | Index movement does not prove this supplier’s current price |
| Should-cost | Negotiation, make/buy or source comparison | It is a model, not a supplier commitment |
| Allowance | Visible placeholder for unresolved scope | Set an owner and expiry; do not let it silently reach order release |
Model quantity, time and one-time work separately
Quote quantity changes material utilization, purchase breaks, setup allocation, batch size, learning, tooling amortization, freight and sometimes the manufacturing route. Show the total and unit cost at each requested quantity. Do not divide the quantity-one estimate by ten and call it a production estimate.
Separate nonrecurring engineering, tooling and qualification from recurring unit cost. State whether the customer pays them directly, whether the OEM amortizes them across the order or whether the business accepts them as an investment. For a multi-year program, show volume and rate assumptions by period rather than one lifetime average.
| Driver | Typical quantity effect |
|---|---|
| Material | Price break, minimum order, nesting, yield and scrap recovery |
| Setup | Fixed time spread across batch quantity |
| Run time | Cycle time, cavity count, takt, utilization and learning |
| Tooling | Dedicated investment, tool life, maintenance and amortization |
| Engineering | One-time design plus repeat order support |
| Logistics | Pack quantity, shipment mode, container use and delivery frequency |
Show uncertainty instead of hiding it in one percentage
Early estimates contain ranges. Material price may be current while engineering hours and supplier lead time remain uncertain. Give the reviewer a base case, named alternatives and the drivers that matter. A blanket ten-percent contingency hides which decision could consume it.
The GAO Cost Estimating and Assessment Guide separates sensitivity analysis, which changes one input at a time, from risk and uncertainty analysis, which considers several changing inputs. NASA’s Cost Estimating Handbook materials likewise treat risk and uncertainty as explicit estimate inputs that analysts must explain and defend. An OEM quote does not need a space-program model, but it needs the same honesty about what is known.
Start with the few inputs that can change the bid decision or margin. For the compressor package, those may be drive price and lead time, stainless piping quantity, enclosure engineering and site duration. Show the result if each moves, then decide which risk belongs in price, schedule, terms or an open clarification.
| Uncertainty control | Example |
|---|---|
| Range | Piping fabrication hours based on preliminary versus approved layout |
| Scenario | Standard drive, alternate drive or expedited drive |
| Sensitivity | Margin change for each 5% material-price movement |
| Risk register link | Noise test failure could add enclosure changes and retest time |
| Expiry | Supplier and currency basis must refresh after 30 days |
| Decision | Finance approves price reserve; sales states delivery condition |
Use indexes for escalation, not as a substitute for cost
The U.S. Bureau of Labor Statistics explains that the Producer Price Index measures changes in selling prices received by producers. It does not directly measure the cost of making a specific product. The BLS price-adjustment guide tells contracting parties to define the base price and period, select and identify the exact indexes, state the adjustment frequency and specify how revisions or discontinued series will work.
Use an index when it matches a defined cost exposure or contract escalator. Record the series title, code, base month, comparison month, weight and calculation. Use separate inputs for material and labor when they move differently. If a purchased drive dominates the job, get a current supplier quote; a broad machinery index cannot replace it.
Close the loop with actual jobs
Compare the estimate with the released order and actual job at the same structure. Separate scope change from estimating error and execution variance. If the customer added work after award, update the commercial baseline before judging the estimator. If production used more hours on the original scope, classify the cause so the right model or process changes.
A useful variance record names the estimate version, order revision, actual source and reason. Feed repeatable findings back into material factors, routings, setup policy, labor standards, supplier assumptions, warranty basis and risk rules. Do not overwrite the old estimate; preserve it as the decision the business made at the time.
| Variance | Question to answer | Owner |
|---|---|---|
| Scope | Did the delivered work differ from the accepted quote? | Commercial and project management |
| Price | Did purchase price, currency or freight differ from the basis? | Sourcing |
| Quantity | Did material use, yield or scrap differ? | Engineering and manufacturing |
| Time | Did setup, run, inspection or engineering hours differ? | Operations and engineering |
| Rate | Did labor, machine or overhead rates change? | Finance |
| Risk | Did a named risk occur, or did the team miss it? | Estimate owner |
Where the products differ
The products below can appear in the same search result while serving different buyers. Choose demonstrations based on the cost object and method you need.
| Product | Best fit when | What to make the vendor prove |
|---|---|---|
| Bourne | A customer estimate combines product data, ERP costs, supplier input, engineering judgment, delivery, risk and approvals | One live RFQ from source documents through approved cost, price and downstream records |
| aPriori | CAD geometry and manufacturing-process simulation drive part cost, DFM or should-cost | Your parts, factories, routings, overrides, batch sizes and variance against trusted results |
| Teamcenter Product Cost Management | The enterprise needs product, tool, supplier, quotation and profitability costing with PLM and ERP data | Your cost structure, master data, versions, scenarios and quote calculation |
| FACTON EPC | The company wants standardized enterprise product costing across functions, plants and programs | Your costing schemes, variants, customer and supplier views, quotation output and governance |
| Costimator | Estimators need repeatable machining or fabrication process models for shop quoting | Your machines, processes, rates, routing logic and completed-job accuracy |
| Epicor Kinetic Estimating | The estimate should use Epicor items, methods, supplier RFQs, history and convert directly to an order or job | A new part estimate, quantity breaks, bought-out cost, job creation and post-cost feedback |
Epicor Kinetic Estimating and Quoting illustrates the ERP-centered option: it uses existing resources and templates, calculates quantities, includes supplier RFQ input, tracks quote history and sends a won quote to an order or job. That can beat a separate estimating platform when the method already lives in Epicor and the customer scope fits its records.
Run the proof on completed and live work
Use five completed estimates with known results and two live RFQs. Include a repeat product, a new configured package, a geometry-driven part, heavy bought-out content and a revision after the first estimate. Give each vendor the same sources and expected outputs.
| Measure | How to score it |
|---|---|
| Coverage | Share of total offered cost represented without offline repair |
| Estimator effort | Hands-on time, questions and manual data entry |
| Traceability | Share of material cost lines with a source, date, revision and owner |
| Model quality | Difference from a trusted process result after known scope changes |
| Revision control | Affected lines reopen and the team can explain the new total |
| Handoff | Approved cost reaches price, proposal and order without rekeying |
| Learning | Actual-job variance can update the right model or assumption |
Count every spreadsheet, copy-and-paste step and expert repair. A vendor demo may calculate one part in seconds while your team spends hours preparing inputs and rebuilding the customer package. Measure the whole estimate.
When Bourne is the best fit
Bourne is best when the estimate is a customer-specific case assembled across systems and people. It reads the RFQ, builds the offered scope, retrieves the current configuration and revisions, collects ERP and historical cost, calls a specialist cost engine for geometry or process work, runs supplier RFQs, shows missing inputs and routes technical, commercial and margin decisions.
Bourne does not need to replace the calculation engine that already works. It can use aPriori for a simulated part cost, Teamcenter or FACTON for a governed product calculation, Costimator for a shop process model and Epicor for an ERP method. Bourne connects those results to the customer requirement and carries the approved cost into price, proposal and order review.
Choose the specialist product when one calculation method dominates the problem. Choose Bourne when estimators spend most of their time finding inputs, reconciling versions, chasing answers and moving results between tools. See the product costing workflow for the application.
Buğra Gündüz
Buğra Gündüz is the co-founder and CEO of Bourne and co-founder of HockeyStack. He built HockeyStack into an eight-figure AI business. At Bourne, he works with entrepreneurs and established companies to create AI products and services.