@arkandel
Here's the current state of things:
If you buy a TV or computer on sale (or iPad on sale) and don't buy anything else, the company you're buying from is probably losing money, or coming close.
If you are buying cables, paper, ink, insurance (and there is good reason to buy the insurance, but be very careful about it), then buy from a store you like. Especially if you are buying stuff with a low-margin item (c.f. TV, computer, iPad). They are okay on the returns if you are this kind of purchaser; you will be back and they will make the money to stay in business.
This commentary is specifically for tech stores.
Micro Center carries so much stuff that they often look like a warehouse more than a high-class store. As much as this could make them look junky, I find that this is in their favor; Best Buy looks like a 90s mall outlet with, as you say, about 3 things in any given category. And while BB is turning things around, their customer service is still largely shit.