Amazon has a warehouse deal for Crest 2-Hr Express Whitestrips and 3D White Rinse Bundle Pack for ONLY $16.15 (scroll down until you see the Amazon listing for this price- I am not sure how long these will stay this price!).
Shipping is FREE with Amazon Prime or $25 Super Saver Shipping.
When your order arrives submit for the mail in rebate for $15!!! After the rebate, it only cost $1.15 for the Crest 2-Hr Express Whitestrips and 3D White Rinse Bundle Pack! These normally sell for $77 on Amazon. I recieved my package in the mail today and it came with a bonus packet of Crest Whitestrips which makes for a 15 month supply for only $1.15!!!