Yay for CVS! I bought four cans of Oust at CVS yesterday and made a profit! Here is what I did:

Transaction 1:
- Bought 2 cans of Oust at $3.99 each
- Used Buy 1, Get 1 Free coupon
- Paid with $3.99 ECB
- Received $6.00 ECB!!

Transaction 2:
- Bought 2 cans of Oust at $3.99 each
- Used Buy 1, Get 1 Free coupon
- Paid with $2.00 ECB & $1.99 OOP
- Received $6.00 ECB!!

I paid OOP on the second transaction because I had a $2 ECB and a $5 ECB, and if I had paid with the $5 ECB, I would have lost $1 ECB.