Free Zappos VIP membership
Zappos offers non-VIPs (i.e. everyone) free shipping and free returns, costs that are factored into the price of their shoes. The site also sells clothes and accessories.
Caveats: limit one invite per e-mail address. You must be 13 or older to sign up. Free overnight shipping is not available for shipments to Hawaii, Alaska, U.S. Territories, P.O. Boxes or AFO/FPO addresses. Orders placed before 1 p.m. PST/4 p.m. EST on a business day will be delivered the next business day. For example, orders placed before 1 p.m. PST on a Monday will be arrive on Tuesday. But orders placed after 1 p.m. PST on a Monday will get there Wednesday. Orders placed on Friday after 1 p.m. PST Saturday or Sunday will be delivered on Tuesday.