How do sweet deals from sites like DontPayFull work? On-site, we have a set of hinckley coupon codes, hinckley promotional codes and hinckley discount codes. For the hinckley offers and extra products, you can get equivalent 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 practice that an current magazine or newspaper coupon does. Once the code is used, you can receive a sure ratio off the original price - which means large savings for your online shopping purchases!