Would you like to know how for sale or auction coupon codes work? When you are shopping for sale or auction from an online store, you can visit DontPayFull.com and find a for sale or auction coupon code for the item that you are trying to buy. Once you add the item to your shopping cart, you can key in the for sale or auction coupon code or for sale or auction promotional code that you obtained. The system will re-calculate the cost of your order based on the ratio of the discount code and in just one click, you can like the cheapest cost for the item that you are trying to buy! It's that easy.