From what I hear it is a big waste of money. If you do a thread search you will find a ton that have to do with that site. I hear that the bags are just really used and they don't really take care of them.
do a search and you will find tons!
good luck!
I did do a search, and it was mainly about borrowing the bags (and I agree that's a waste), but I was wondering about purchasing them - because they have an outlet where you can purchase bags (some brand new) at big discounts...