Ask and you shall receive.
Best Buy LOSES money on most laptops sold. Yep, that's right, it's almost like a GM business model

p) Anyways, the reason we sell those items is the accessories. Mice, bags, cables, service plans, printers, all these things have comparatively a lot of margin, and this is where the money is made. TVs are starting to get this way as well, often times a mount, stand, cabling, and other accessories can actually make more money for the store than the TV itself.
We make lots of money on batteries, paper, appliances, and audio equipment. We make very little money on video games, but get kickbacks for selling them which are not factored into our discounts. The easiest way for us to make money at Best Buy? Sign people up for services. Comcast, Sprint, DirecTV, etc all give us $75-250 for signing someone up for their services. Which takes all of 5-10 minutes. It's much more time efficient than trying to sell a computer and load it with accessories for an hour or more.