Simulator · run a forecast

See your SKU's profit window — before the copycats arrive.

Type a SKU, pick a category and ASP band, set the pressure dial, and the simulator plots the same four numbers the brief uses — first-week GM, half-life, stable GM, and the week copycats typically enter. Run it on as many SKUs as you want before Monday's drop.

What this page is — and isn't

  • ·A quick forecast tool for sellers testing a SKU before committing inventory.
  • ·Plain language, no research-paper jargon — same vocabulary as the brief and the method page.
  • ·Deterministic — the same inputs always produce the same four numbers, so you can compare runs side by side.
  • ·Not a sentiment score, not a buying recommendation. The forecast says the slot is workable; your operator decides what to do with it.

Margin-decay simulator form

A short label so you can tell this run apart from the next.

Anchors the default first-week GM if you don't type your own.

Bucket, not a free number.

Optional. Leave blank to use the category default.

Coarse dial — drives the half-life + imitator-entry defaults.

Next issue · Mon 06:00

Run the forecast on every SKU you're considering this Monday.

You just plotted your own number on the same chart the brief uses. Drop your email on the home page and the next shortlist lands in your inbox before you commit inventory.

Join the waitlist

Already decided? Subscribe — the next shortlist lands Monday at 06:00.