From Brotato Wiki

Coupon.png
Coupon
Item
Tier 1
Stats
-5% Price
Price
15
Limit
5

Item

Coupon is an in-game item that can be bought from a Shop or can be found in a Crate. Most Items modify the Stats of the player, and some of them provide additional effects.

Coupon

Coupon.png Coupon reduces the Items Price secondary stat by 5%.

It is the only item in the game that modifies shop prices.

Shop price reductions stack additively, and the current total can be seen in the secondary stats tab, as % Items Price. You can stack up to 5 Coupons for a maximum 25% price reduction. (Items will cost 75% of the default price.

The highest cost reduction possible is 50%, on the character Entrepreneur.png Entrepreneur and having the maximum amount of 5 coupons.

Coupon does not modify the cost of rerolls in the Shop or rerolling Upgrades.

Strategy

The Coupon is an efficient economic item that provides a sizeable net gain in most runs, unless bought very late (outside of endless mode). It is generally considered one of the better items in the game, and is nearly always bought in shop when seen, unless it is found at wave 16-18 or later.