Compare deal types to see what you'll actually pay and save
💡 Why This Matters Black Friday deals come in more shapes than a flat percentage off — BOGO, 2-for-1, 3-for-2 — and they're not always as good as they sound. Pick the deal type you're looking at and see exactly what you'll pay and save.
2-for-1 on two equally-priced items works out to exactly 50% off — but the moment quantities are odd or prices differ, the two deals stop being the same, which is exactly why comparing the real numbers matters.
As an Amazon Associate we earn from qualifying purchases.
We do our best to link products that we genuinely believe are organic, no disposable junk, sustainable, and built to last.
Each deal type uses its own math. Percent off: final = price − (price × %÷100). BOGO % off: pay full price for one item, a reduced price for the second. 2-for-1: pay for one item per pair. 3-for-2: pay for two items per set of three. Pick the tab matching your deal and this calculator applies the right formula automatically.
The bigger-sounding deal isn't always the better one. A 40% off second item (BOGO) saves 20% total across two equal-priced items — noticeably less than a straight 30% off everything, even though "40% off" sounds bigger.
This calculator assumes items in a deal are equally priced (the standard case for these promotions). It doesn't model sales tax, shipping, or coupon stacking beyond the single deal type selected — for stacked percentage discounts, use the Double Discount or Triple Discount calculators instead.
Run every deal you're comparing through the matching tab before deciding. If a store offers a choice between deal types on the same item, the winner is whichever produces the lower "You Pay" number here — not whichever headline percentage looks biggest.
Example: A store offers "buy a T-shirt, get the second 40% off" on $50 shirts. You pay full price ($50) for the first, and $50 × 0.60 = $30 for the second. Total = $80 for two shirts, saving $20 off the $100 combined price — a 20% total discount, even though the deal is billed as "40% off."
Four common Black Friday deal formats: straight percent off, buy-one-get-one at a percent off, 2-for-1, and 3-for-2. For stacked discounts (like 20% off, then an extra 10%), use the dedicated Double Discount or Triple Discount calculators instead.
For two items of equal price, yes — 2-for-1 works out to 50% off your total. But the deals stop being equivalent once you're buying an odd number of items or items at different prices, which is why it's worth running the actual numbers.
It depends entirely on the percentages and quantities involved — a 75% off deal can easily beat a 3-for-2 offer, or lose to it, depending on how many items you're buying. Run each deal you're comparing through this calculator rather than trusting the bigger-sounding headline number.