CVS has a promotion that gives you $10 Extra Bucks when you buy any Crest or CVS brand teeth whitening kits. There is a CVS brand 5 Minute Whitening Kit that our store sells for $6.49, so the net cost would be free with a profit of $3.51. Our store was sold out of those (no surprise) but I was able to buy the CVS brand Nightime Whitening Gel for $9.49, so I got a free item and made a profit of 51 cents before tax. Check your CVS stores to see if they have either of these items in stock.