I looked into it, but the only store that it applied to here in town is Rite-Aid. Which I never shop at so it wasn't worth it for me. Maybe when I live in a bigger area that has more options.
I hadn't heard about it until now and I looked it up. I don't like the idea that you have to pay them $10 every 8 weeks for one store.
Cheaper idea and what they probably use - sign up for your grocery store/favorite store, etc email savings list and check online for their ads. I think this online thing is one of those "too good to be true" yet you are paying more than what you would possibly save.