Update: Zappos will still surprise customers with free overnight shipping, but it is no longer a perk they will actively promote.
Walgreens Implements "Scanner Price Guarantee" (But Only In California)
By January 7, 2008
For the next three years beginning this February, California Walgreens shoppers will enjoy a “Scanner Price Guarantee” that rewards customers who are overcharged at the register and bring it immediately to a cashier’s attention.
