Crest 3D Whitening Strips 4 Count- Free at Target with coupons

One nice thing about Target is that they price match Amazon deals. You go to the guest service, and show them your phone with the link on Amazon (which can change the price in matter of minutes) and they will adjust the price from $49.99 to $24.45 (the current price; it changed twice since yesterday).
Target has a coupon of $10/1 in the Red Plum of 4/7 or 4/14  (expires 5/7 ) which you can pair up with the manufacturer $7/1 from P&G exp May 31
Pay $7.45 (before tax)
Mail in Rebate for $10 (from Crest website)
Final price $2.55 money maker