What did the last stockout actually cost?
Four sliders, your numbers, your arithmetic. This page asserts nothing about your business that you did not type into it: every figure below is computed from your inputs, in the open, and one fixed assumption that is labelled where it is used.
The two costs of a dark listing.
Margin stops the day the listing goes dark, and it does not restart at full speed. Set the four inputs to your last real stockout, or the one you can feel coming.
The recovery stretch is yours to estimate: how long rank and conversion took to climb back after your last restock. It is counted at half speed below, a fixed assumption you can scale in your head.
Daily revenue, times margin, times the dark days. The clean part of the bill.
Your recovery stretch, counted at half the normal rate: the listing is live again, the momentum is not.
One SKU, one incident. Multiply by the bestsellers that went dark in the same season, if that is your situation.
On your lead time, the decision that prevented this was due 75 days before the first dark day. That week, not stockout week, is where the plan had to exist.
Lead time is a path, not a number: production, inland, port, ocean, receiving. The free map builder computes the whole path from your own chain.
The bill is an argument for a calendar.
Nothing above is a claim about the future. It is the arithmetic of the last incident, and its only job is to price the alternative: a weekly rhythm where the counts get reconciled, the lead times get re-checked, and the reorder decisions get made before the order-by dates pass. That rhythm is the In-Stock Engine, and whether it fits your catalog takes thirty minutes to establish.
How the weekly cycle runs
Build once, then the plan lands before a 30-minute call, every week. The mechanics, end to end.
Why a tool alone does not close it
Software does the arithmetic. The failures live in the inputs and the follow-through.
The documented record
Every proof number this site uses, traced to a documented catch, with the limits stated.
Talk it through against your catalog.
Bring the SKU that went dark and the report it lives in. Thirty minutes later you know which SKUs are next, and the order-by dates behind them.