Production Ramp, Scale-Up & Launch Readiness worked example

Launch Inventory Buffer at 14% buffer share expected to go unsold or obsolete: a worked example in production ramp, scale-up & launch readiness

Suppose buffer share expected to go unsold or obsolete falls to 14%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate the cost of holding a finished-goods safety buffer to protect customer supply during the production ramp.

The inputs for this scenario

  • Buffer units stocked ahead of launch: 2,500 units (held at the documented default)
  • Annual carrying cost per buffered unit: 42 $/unit (held at the documented default)
  • Buffer share expected to go unsold or obsolete: 14 % (the input this scenario stresses; the baseline uses 20)
  • One-time warehousing and staging setup cost: 8,000 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Launch inventory buffer cost = buffer units x carrying cost per unit x at-risk share + staging setup.
  • Total launch inventory buffer cost works out to 22,700 $ at these inputs, and this is the headline figure for the scenario.
  • Launch inventory buffer cost per unit works out to 9.08 $ / piece at these inputs.
  • Variable launch inventory buffer cost works out to 14,700 $ at these inputs.
  • Fixed launch inventory buffer adder works out to 8,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where buffer share expected to go unsold or obsolete sits at 20% and the headline result is 29,000 $, this scenario comes in 21.72% below the baseline at 22,700 $.
  • It computes the total cost of a pre-launch inventory buffer by combining carrying cost times the at-risk share of units with a fixed warehousing and staging adder, then divides by units for a per-unit cost. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total launch inventory buffer cost: 22,700 $ (headline result)
  • Launch inventory buffer cost per unit: 9.08 $ / piece
  • Variable launch inventory buffer cost: 14,700 $
  • Fixed launch inventory buffer adder: 8,000 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Launch Inventory Buffer calculator, set buffer share expected to go unsold or obsolete to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.