Before you discount, do the maths.

Most sellers sell more on Black Friday and make less. Enter the price and costs of one product — the calculator shows how far you can cut the price before an order loses money, and how many more orders the discount needs to be worth it.

—days to Black Friday

Discount calculator · free

Selling price Product cost (COGS) Shipping you pay Platform + payment fees, % Fixed fee per order Planned discount 25%

Maximum discount before a loss—

Profit per order, full price—

Profit per order, discounted—

Orders needed for the same profit—

Break-even ROAS at the discount—

Discount	Profit / order	Orders ×	ROAS BE

One product, one order. Percentage fees are charged on the discounted price. The Profit Ritual workbook does the same maths for every SKU and every campaign at once, from your data.

The 6-step seller checklist for the peak

each step = one file in the Q4 Seller Pack

1Find the money left on the tableBreak-even ROAS and contribution per SKU — so you know which products can carry a discount and which cannot.Profit Ritual — E-commerce Profitability Model → 2Test every promo before you announce itPromo safety: what the discount costs, how many extra orders it needs, and the promos that lose money by design.Discount & Promo Safety Calculator → 3Know how much cash is sitting in stockCapital per SKU, reorder points and the sleepers to clear in the sale instead of your best sellers.Inventory Capital & Reorder Planner → 4Plan the cash through January13 weeks ahead: the lowest balance after stock orders, ads and the slow first weeks of the year.13-Week Cash Flow Forecast → 5Decode the payouts after the peakPaste the Shopify or Etsy export — see your real take rate after every fee, refund and chargeback.Shopify Payouts Decoder → 6Raise prices in January without losing customersThe price-increase simulator: how many customers you can lose and still earn more.Price Increase Simulator →

Seasonal pack · 7 files

Q4 Seller Pack

Seven files for the quarter that makes the year: the e-commerce profitability model, the promo safety check, the inventory capital planner, a 13-week cash flow, the Etsy and Shopify payout decoders, and a price-increase simulator for January. Everything a store needs between October and the January sale.

$79~~$191~~ bought separately · save 59%

What is inside

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Profit Ritual — Lite: the same model, 30 rows per table

The file arrives in a minute, then a few e-mails about the ritual — unsubscribe in one click.