All rebates are made on the assumption that most will not be redeemed. Even if 100% of the sent rebates are filled without other shenanigans, that's the business model. As such, I find all rebates evil. If it weren't so, the manufacturer would just lower the price it charges stores for the product, and the stores would pass the savings on to the user. If they are concerned that the stores won't do that, good old manufacturers coupons have been around a long time, and would work just as well. Although most coupons go unredeemed as well, at least the barrier to their use is a lot lower.