Umm... do you know how retail works? It's not the up to the store. There's a little more involved but basically the margin is the difference between how much the store got said item and its MSRP (manufacture suggested retail price). If the store got a laptop for $800 but it's MSRP is $824.99 you'll begin to see that in order to make a decent profit it would need to sell hundreds of units. Now throw your attachments in there where it costs almost nothing for the company do. That $199 3 yr extended warranty really costs the company $19. On let's say 5 of these sales: (($824.99 - $800) + ($199 - $19)) x 5 ~ $1025... that's a lot more impressive than just 5 lone laptop sales giving the store a revenue of $125. CHA-CHING!