Where the numbers come from: every figure on this page is a worked example computed by the calculator above, and the line behind each answer is shown with it. Worked examples are not market prices, and no deal or third-party price is quoted anywhere on this page.
What does % off actually cost?
A “% off” tag is one multiplication: the price times (1 minus the percent ÷ 100). $60 at 30 % off works out to 60 × 0.70 = $42; the % off tab above shows it the moment the page opens, with the sum beside it.
The reverse question (the tag says $84, down from a “was $120”: what percent off is that?) is a change-between-two-numbers question. The full six-way percentage calculator does that direction; 84 ÷ 120 = 0.7, so the tag is 30 % off its “was”. Whether $120 was ever really charged is not a math question at all: that is price history, and the deal-check guide walks it.
Do 30 % off and 20 % off stack to 50 % off?
No. Stacked discounts multiply, they do not add. The second percent applies to the already-reduced price, not the original. 30 % off leaves 70 % of the price; an extra 20 % off leaves 80 % of that: 0.70 × 0.80 = 0.56. You pay 56 % of the original, which is 44 % off, not the 50 % the two tags seem to add up to.
| Step | Arithmetic | Price |
|---|---|---|
| Original price | the tag | $60.00 |
| First discount, 30 % off | 60 × 0.70 | $42.00 |
| Extra 20 % off that | 42 × 0.80 | $33.60 |
| What the stack really is | 0.70 × 0.80 = 0.56 | 44 % off |
| A true 50 % off, for comparison | 60 × 0.50 | $30.00 |
The gap between the tags and the truth is the most expensive mistake of the weekend: on $60 it is $3.60; on a $600 appliance it is $36. The stacked discounts tab above works any pair, plus an optional third tag, and shows the effective number.
What is buy one get one half price really worth?
Buy one, get one half price averages out to 25 % off across the two items: you pay 1.5 times the price for 2. “Half price” describes the second item only; the pair is what lands in your basket. It is a good deal exactly when you needed two of the thing anyway. On the same $40-items basket:
| Offer | You pay | Effective discount |
|---|---|---|
| Buy one, get one half price (2 items) | 1.5 × $40 = $60.00 | 25 % off |
| 3 for 2 (3 items) | 2 × $40 = $80.00 | 33.33 % off |
| 4 for 3 (4 items) | 3 × $40 = $120.00 | 25 % off |
| Straight 30 % off, both items | 1.4 × $40 = $56.00 | 30 % off |
For a buy-one-get-one offer at any percent (get the second 40 % off, get one free), the buy one get one calculator works out the register total and the percent off each item.
Which pack is actually cheaper?
Divide each price by its amount and compare the per-unit prices: per 100 g, per 100 ml. A 500 g pack at $4.50 works out to $0.90 per 100 g; a 750 g pack at $6.30 works out to $0.84. The bigger pack wins here, until a sticker flips it: 30 % off the small pack brings it to $3.15, which is $0.63 per 100 g and the better buy. The price per unit tab above does the division for two packs and names the cheaper one.
These are worked examples, not shelf prices; the habit is the product. Sellers know bigger packs read as better value; only the per-unit number says.
What will the receipt actually say?
The tag math is not the till math. After the discounts come tax and shipping, and neither is part of the discount. The worked example: $60 at a stacked 30 % + 20 % is $33.60; with 7 % tax it is $35.95; add $6.00 shipping and the receipt says $41.95, about 30 % off the $60 sticker, not 50 %. The true checkout tab runs the whole line for any price.
That gap is the quietest part of deal season: a “50 % off!” weekend can end up nearer 30 % once the till is done. If the effective number still beats every other option you have, buy it; that is the whole test.
When is Black Friday 2026?
Friday, 27 November 2026, the day after Thanksgiving (Thursday, 26 November). Sellers commonly run offers across the whole weekend into Cyber Monday (Monday, 30 November 2026); Etsy’s own seller guidance tells shops to run deals the entire Black Friday weekend, as percentage-off, BOGO or free shipping (read 22 September 2026). Offers that start early and run past the weekend are normal, which is why the checking math matters more than the calendar.
This page is the math, not a deals list: no deal listings, no third-party prices, no affiliate links; every number above is a labelled worked example. The Black Friday hub keeps the same rules for the whole season, and the site’s own packs stay at their everyday price all year.
Questions
Is 30 % off plus an extra 20 % off the same as 50 % off?
No. Stacked discounts multiply: you pay 0.70 × 0.80 = 56 % of the price, which is 44 % off. On $60 that is $33.60, while a true 50 % off would be $30.00. The stacked-discounts tab works any pair, and an optional third tag.
What is buy one get one half price worth?
25 % off across the two items: you pay 1.5 times the price for 2. Against a straight 30 % off on both, the straight discount wins ($56 instead of $60 on two $40 items); against paying full price for the second item, the BOGO wins. It depends on whether you truly need two.
How do I compare a 500 g pack with a 750 g pack?
Work out the price per 100 g for each: divide the price by the grams, times 100. $4.50 for 500 g is $0.90 per 100 g; $6.30 for 750 g is $0.84, so the bigger pack is cheaper per gram here. The price per unit tab does this for two packs in grams or milliliters.
Do tax and shipping change the discount?
They change what you pay, not the tag. $60 at a stacked 44 % off is $33.60; with 7 % tax and $6 shipping the receipt says $41.95, about 30 % off the sticker. The true checkout tab works out that whole line and shows the effective discount.
Is the calculator free, and does anything get uploaded?
It is free, needs no account, and runs entirely in your browser. The prices you type never leave your device.
Does this page list Black Friday deals?
No. There are no deal listings, no third-party prices and no affiliate links; every number on the page is a labelled worked example. The page is the math that checks the deals other sites show you.