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Super Cheap Crest Whitestrip Kit
Right now, get the Crest 3D White Luxe Whitestrips kit for $14.93 (Reg $44.99) on Amazon.com when you combine sale and coupon. Currently the kit is on sale for $29.93 and there is an on-site coupon for $15.00. Not to mention free shipping for all Prime Members.
In conclusion, all Prime Members qualify for FREE 2-day shipping on all Prime items. However, for those who are not Prime Members, you can also receive FREE 2-day shipment when you sign up for a 30-day trial.