Your comment reminds me of the club card at grocery stores. The store just raised the prices a lot and probably are still making money by someone using the club card.
Actually it is a club card. All our stores offer them but I generally shop at one store most of the time mainly because they also have a gas station which gives $.10 a gallon off for every $50 you spend. The other thing the card gets you is 20% off anything you buy which is the store brand. Some of their stuff I buy because it happens to be made in the U.S.A. Many of the other things I buy the familiar brand because the store brand of the item is really cheap and inferior. They did have 24 bottles of Ozarka water for $2.00 last time I was in there but you could only buy 1 so made a couple of trips and restocked my Obama closet.