How to stack staple coupons

I just found out how to stack staple coupons , so I'll explain how it works.

Staple regularly gives out coupons in their mails so you just have to wait for the right moment to make your purchase!

For example you have 2 $20 off $150 coupons and the item you want to purchase is 299.99$. You can stack them together if your total purchase is over 300$. $150 for each coupon. That is why you have to add something to your purchase, let's say a pen to make it over equal to $300. If the item is less than 300, you can't stack them. Got the math?

It's even better with 20$ off 100$ coupon. With every $100 spent, you save 20$. So if your item is $400 you can stack 4(!) of them. Always calculate before what is the best way to stack them.

Have fun!