Manufacturing Sales Engineering, Estimating & Quoting Operations worked example

Quote Revision Cost at 29% billable revision share: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop billable revision share to 29%, then walk the calculation through step by step. Estimate the internal cost of revising a manufacturing quote including estimator labor and approval overhead.

The inputs for this scenario

  • Estimator hours per revision: 6 hours (held at the documented default)
  • Loaded labor rate: 95 $/hr (held at the documented default)
  • Billable revision share: 29 % (the input this scenario stresses; the baseline uses 40)
  • System & approval overhead: 180 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total revision cost = estimator hours x loaded rate x billable share% + system overhead.
  • Total quote revision cost works out to 345 $ at these inputs, and this is the headline figure for the scenario.
  • Quote revision cost per unit works out to 57.55 $ / piece at these inputs.
  • Variable quote revision cost works out to 165 $ at these inputs.
  • Fixed quote revision cost adder works out to 180 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where billable revision share sits at 40% and the headline result is 408 $, this scenario comes in 15.37% below the baseline at 345 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to billable revision share, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a flat loaded rate and a single overhead figure; it does not capture opportunity cost — the new quotes that estimator could have produced instead.

Results at a glance

  • Total quote revision cost: 345 $ (headline result)
  • Quote revision cost per unit: 57.55 $ / piece
  • Variable quote revision cost: 165 $
  • Fixed quote revision cost adder: 180 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Quote Revision Cost calculator, set billable revision share to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.