The one I worked at a few years ago, I actually opened the location, worked back in car audio and made 8 bucks, along with all my fellow car audio, and computer salesmen. The discount was awesome when I was there. My cousin works there now, and it's not as good. Only like 50 bucks off a tv, but accessories are still good deals. He wires for 20 bucks. So it's not bad but not as good.
I do agree about the appliances, and TVs if you catch a deal is great. I saw a Sony tv with a ps3, and choice of two games for under 1000 bucks, so they do have great deals but my location's employees are just stupid at best.