Oh, I almost forgot...
Glad you got some deals! My deal-of-the-week is 2 pks. of pens for .19 each which have a rebate also; I bought 3 backs for .60 w/tax and will get a $4.50 rebate--$3.90 money-maker!
I'm guessing that Walgreens is pretty strict about the expiration dates on the RR. I never have a problem using them up in time.
And, yes, you do have to watch about spending