Production Ramp, Scale-Up & Launch Readiness worked example

Launch Inventory Buffer at 23% buffer share expected to go unsold or obsolete: a worked example in production ramp, scale-up & launch readiness

What does the result look like when buffer share expected to go unsold or obsolete reaches 23%? The full calculation is worked below with real intermediate numbers. Use it when sizing launch safety stock and you need to know what carrying the buffer costs before deciding how deep to stock for ramp variability.

The inputs for this scenario

  • Buffer units stocked ahead of launch: 2,500 units (unchanged)
  • Annual carrying cost per buffered unit: 42 $/unit (unchanged)
  • Buffer share expected to go unsold or obsolete: 23 % (raised for this scenario; the documented default is 20)
  • One-time warehousing and staging setup cost: 8,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Launch inventory buffer cost = buffer units x carrying cost per unit x at-risk share + staging setup) to the inputs above produces each figure below.
  • At this operating point the engine returns 32,150 $ for total launch inventory buffer cost, the number this scenario is built around.
  • At this operating point the engine returns 12.86 $ / piece for launch inventory buffer cost per unit.
  • At this operating point the engine returns 24,150 $ for variable launch inventory buffer cost.
  • At this operating point the engine returns 8,000 $ for fixed launch inventory buffer adder.

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 10.86% above the baseline at 32,150 $.
  • A figure at this level is achievable when buffer share expected to go unsold or obsolete is genuinely sustained, not just peaked for a shift. It models buffer cost, not the stockout or lost-sales risk of holding too little; pair it with a service-level or demand-variability analysis to find the right buffer size.

Results at a glance

  • Total launch inventory buffer cost: 32,150 $ (headline result)
  • Launch inventory buffer cost per unit: 12.86 $ / piece
  • Variable launch inventory buffer cost: 24,150 $
  • Fixed launch inventory buffer adder: 8,000 $

Run it with your numbers

  • Every input above is editable in the live Launch Inventory Buffer calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.