Contract Manufacturing, Job Shop Quoting & Make-to-Order worked example

Customer Change Cost at 110% customer-approved change scope: a worked example

This scenario runs the customer change cost calculation on the strong side: 110% customer-approved change scope, with every other input held at its documented default. deciding whether to issue a change order, revised quote, or customer approval request

The inputs for this scenario

  • Units affected by customer change: 380 units (unchanged)
  • Change cost per affected unit: 12.75 $ / unit (unchanged)
  • Customer-approved change scope: 110 % (raised for this scenario; the documented default is 100)
  • Fixed change-order cost: 1,850 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable customer change cost = units affected by customer change × change cost per affected unit × customer-approved change scope) to the inputs above produces each figure below.
  • At this operating point the engine returns 7,180 $ for total customer change cost, the number this scenario is built around.
  • At this operating point the engine returns 18.89 $ / piece for change cost per affected unit.
  • At this operating point the engine returns 5,330 $ for variable customer change cost.
  • At this operating point the engine returns 1,850 $ for fixed change-order cost.

How this compares with the baseline

  • Against the tool's baseline example, where customer-approved change scope sits at 100% and the headline result is 6,695 $, this scenario comes in 7.24% above the baseline at 7,180 $.
  • Use it when a customer requests a revision to an open order, a dimension change, a new finish, a substituted material, and you need to price the resulting change order. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • total customer change cost: 7,180 $ (headline result)
  • change cost per affected unit: 18.89 $ / piece
  • variable customer change cost: 5,330 $
  • fixed change-order cost: 1,850 $

Run it with your numbers

  • Every input above is editable in the live Customer Change Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.