CVS.....I'll stop buying when they stop paying me!

So, I've read up on CVS Pharmacy, and have (like many) cracked the code! Here's what I bought today and paid nothing out of pocket, and got $22 in CVS Extra Bucks back. So technically, I just made $22 to buy all this stuff! Here's how it worked out:
Total before coupons: $73.90
Less $37.11 coupons: $36.79
Less $40 CVS Extra Bucks (from previous purchase): -$3.21
Plus got $19 Extra bucks for tonight's buys: -$22.21
So now I have $22 to spend on the next purchase, and a whole lotta Tylenol (which normally is like $7-$8 a bottle, so what a steal)!

As long as I never spend more that the "Extra Bucks" in my hand, I'll never have to pay out of pocket for anything at CVS again, and I'll make money off of most purchases.
SWEET!!!!