cloud,
the stuff that we are all buying is only like 5-6$ so yes its way cheaper than another heater...Believe me if we could use 6-10 coupons per item they would be broke lol....Many of us are making multiple trips, to multiple different stores...
Once you get them to replace your heater on the recall, you would have to buy the heater, use a 5$ coupon....Wait a day go back and grab the fish food, use the coupon...for the max amount of savings. Some people have said they have done multiple transactions one after another with the same cashier, and the cashier didn't care. So you printing out each coupon and making them separated transactions might save you gas money on coming back the next day, but i have yet to find a cashier that will do that for me... : / hope that helped