CompUSA advertised multiple discounts on a 50 CD spindle. A $5 istant and two mail is for $5 & $7 each.
I git the discount at the check out counter of $5. When I asked for the other discount coupons I was directed to a wall that had no less than 90 discount coupons available. I eventualy found the two I needed.
When I started to fill the forms out it became clear that the two discounts were imposible to get since they both required the original UPC code from the product package.