How do sweet deals from sites like DontPayFull.com work? On-site, we have a pack of sinkers coupon codes, sinkers promotional codes and sinkers discount codes. For the sinkers offers and other items, you can receive corresponding coupon codes as well. When you visit the online shopping site where you are making a order from, all you have to do is key in the coupon code. It works pretty much the same method that an actual magazine or newspaper coupon does. Once the code is applied, you can find a sure percentage off the original price - which means significant savings for your online shopping purchases!