Promotion!

Was at an electronic goods store today, looking for microwave ovens, when we came across this sign. Price now is $359 + u get to get $220 cashback, meaning that u only have to pay $359 - $220 = $139. Everything seems fine, except that the usual price is $98? Meaning that, if u waited for the promotion period to be over, you'd probably be able to buy it for $41 cheaper!!