For American Express cardholders, ShopRunner
still offers a ShopRunner Perpetual Membership
when you enroll with your American Express card
and keep it as your default payment method
. (Your membership may be canceled if you remove the American Express card as the default payment method.) That's tied with our mention from last week as the best offer we've seen for this shipping service. (We've seen as much as a 1-year membership for free for everyone.) It includes unlimited free 2-day shipping, free shipping on returns, and more. Some of the vendors that use this service include Toys "R" Us, newegg, Lord & Taylor, Calvin Klein, eBags, and drugstore.com.