Amazon has Crest 2-Hour Express Whitestrips and Rinse Bundle for $16.15 with FREE Super Saver shipping and $25 purchase.
You will need to choose “Other Buying Options” and then scroll down to find the price. It will NOT come up automatically.
Purchase these strips and then submit for the $15 Crest Mail In Rebate and you’ll only pay $1.15 out of pocket.
Pricing was current when the post was published, however Amazon prices change often, so please check before you buy.