Promotion total
$5.49
Effective price per item
$2.75
Real savings
$5.49 (50.0%)
2 items
Quick answer: A true buy-one-get-one-free on two equal items is 50% off each item—not one item free on top of a full-price purchase. Divide the total you pay by the total number of items received to get the real per-item price, then compare it to buying elsewhere.
Practical guide
How to compare BOGO and multi-buy deals
- 1
Enter how many items the offer requires and how many you actually pay for.
- 2
Include any percent-off second-item rule and unequal item prices.
- 3
Compare the effective price per item with the normal unit price and buy only a usable quantity.
Worked example
Example: Two equal $6 items in a true buy-one-get-one-free offer cost $6 total, or $3 each—a 50% effective discount.
How to read the result
A BOGO headline is valuable only when the required quantity fits your needs and the effective unit price beats alternatives.
Important limits: Retailers may charge for the higher-priced item, restrict mix-and-match products, or require loyalty enrollment.
Evergreen method
Measure savings against a clean baseline
A saving is the difference between comparable baskets, not a coupon total or an advertised percentage.
Formula
savings rate = (baseline cost − new cost) ÷ baseline cost × 100Reproducible steps
- 1.Compare the same quantities and quality level.
- 2.Include fees, membership costs and unused products.
- 3.Annualize only after several representative shopping cycles.
Data note — Evergreen model: The formula works with your own inputs and does not depend on a specific price or year.
FAQ
Questions, answered
Is BOGO always 50% off?
Only when two equal-priced items are required and one is free. Buy one, get one 50% off is a 25% effective discount across two equal items.
What if the two BOGO items have different prices?
Many stores discount the lower-priced item. Use the actual pairing rule instead of assuming half off.
Should I buy a BOGO deal if I need only one item?
Not automatically. Compare the total out-of-pocket cost, storage, and likely waste with buying one item elsewhere.
How do I calculate the real discount on a BOGO deal?
Divide the total you pay by the total number of items you receive. For a true buy-one-get-one-free on two equal $5 items, you pay $5 for two items — $2.50 each, a 50% effective discount. The BOGO Deal Calculator above handles unequal prices and partial discounts automatically.
Is buy one get one free really free?
In a true BOGO, one item is free but you must buy the other at full price — so the deal is effectively 50% off two items, not one free item on top of a regular purchase. Always compare the per-item effective price against buying just one item at a competitor.
Related
Keep going
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