Why do tax and shipping costs sometimes differ from what I saw on Extrabux?
Extrabux does its best to show accurate tax and shipping costs, but please keep in mind that for some stores, the tax and shipping costs shown are only estimates. Sales tax estimates are based on your zip code and the sales tax policies of the merchant. Shipping cost estimates are based on the product weight, shipping destination, distribution center location, and carrier used (UPS, USPS, FedEx, DHL, etc.). In some cases, however, Extrabux is not provided with all information necessary to estimate the exact tax and shipping costs.