CVS 8/15/10, SPENT $.78

My CVS trip this week only consisted of two items only because I wanted to keep my ECB's rolling. I started with $10 ECB's and bought the following:

1 Glide Floss (used MQ)
1 Blink Tears (used $1.50 IP)

TOTAL OOP $.78 including tax
RECEIVED $7.99 and $2.50 BACK IN ECB's

My next question is, how can you not do this? My daughter will use the blink tears and everyone can use dental floss! It's just one more floss to add to the stockpile!