I don't know. I have mostly enough stuff stocked up, but when they are willing to pay me to do it, I find it hard to resist. Walgreens is a mile from my house, and I pass it on the way to almost anywhere, so it doesn't require any extra trips. They have a rebate program where if you allow them to put it on their rebate card they give you an extra 10%. The only things I get are free after rebate, so they are money makers. The Register Reward program has a few Free after RR, and those are the ones I look at closely.
The 3 day Diet start was 10 w/10 RR so I paid for it first with my 5 RR and my rebate card.
Then the Lanacaine was 6 w/6 RR, the Carmex lotion was 4.99 w/4 RR and the walgreens Tampons were 1.50 w/1.50 RR. There was also a Lipton green tea for .99 w/99 RR.
I used the 10 RR from the first transaction, the rest of my rebate card and 2.02 cash.
I received 12.49 back in RR. So when I subtract what I started with from what I ended with, I spent 1.73 and have several items for the donation box and several for my first aid kit.
There are a few other rebate items I will be buying with the RR, then I will be done (Maybe) for this month. Walgreens is going to a card based system, like CVS, soon, so I will have to wait and see how that works out. All in all, I think it is still fun enough for me to continue. I didn't use any coupons in the above scenario.