I'd imagine one of those "Scratch N Dent" places would be a good place to start. My wife and I have thus far bought all of our major home appliances from them. The stove/oven we got a HUGE discount on because of one tiny dent in the side. The fridge-freezer we got from Lowe's because they were the only ones who sold the unit we liked. Plus it was on clearance and was dirt cheap. LOL
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We made a slight departure when we had to get a new dishwasher and front load washer and dryer. Those we bought brand new from the retail sales division of the local "Scratch N Dent", but at a significant savings over Sears, Lowes or the Home Depot. Now, as far as Best Buy goes, CD's, MP3 players, LED TV's and computers, yes. Major home appliances? I dunno. Others may have gotten good deals and service from them, so I can't really judge.
Hope this helps.
Ross