Today only, Soap.com drops the price of the Crest 3D White 2-Hour Express Whitening Kit + Rinse from $57.20 to $47.20, with the eCoupon. Pay with a new account and use code SOAPDEAL30 to drop it to $25.19. Better yet, new customers can also get another 20% off by stacking code SOAPAFF at checkout, lowering the price to $26.43. Shipping is free and there is no sales tax (except CO, MO, NC, NJ, NV, NY, PA). Note: You will have to enter your zip code to check shipping availability, as this is not available to ship to all areas.