I agree, Tilden. Not only do stores start changing the policies because of money lost buy also lost customers. If I go to one store and all the product I came in for is gone, I probably would go elsewhere.
Today, I was at my local Target and just hit coupons and products at the right time. I had several about to expire on things I use all the time, and found a few clearance items that I had $1 coupons for, as well as a buy one get on free on shampoo. I felt a bit extreme handing the cashier about 10 coupons.... I can't even imagine the extreme couponers!