If you use and enjoy Amazon Prime, now there is another service that is available for free for Amex card holders. Its called ShopRunner. Members get free 2-day shipping to a more diverse group of retailers. Also ShopRunner members enjoy free return shipping, member-only deals and have access to Express Checkout at select stores. The list of stores is available here. While many stores are higher end, there are others like Tommy Hilfiger, Last Call, Staples, Toysrus, Babysrus, Newegg, Under Armour. Can’t go wrong for with free shipping and free returns, for just using your Amex!