Potato Discount

When adding a product worth less than $2.99 makes your overall Amazon order cheaper.
Amazon has a $25 minimum for free overnight shipping — otherwise you have to pay $2.99 to get it shipped overnight. So if your subtotal is $22.01 - $24.99, you can add something cheap (such as a single potato) to push your cart over the limit and get it all for less than you'd have to pay with the overnight shipping fee.

I needed my order fast and didn’t want to pay $2.99 for overnight shipping, so I added a $0.69 potato to my cart. That Potato Discount saved me $2.56!