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