I'd have to 2nd the idea of selling on eBay instead of at a yard sale. This past Christmas, I was going through our movie collection. There were quite a few I thought we could get rid of, but my children had a very tough time with the thought of parting with their movies. I told them we'd try selling them on eBay and whatever money was made would be divided between them and they could do whatever they wanted with it. (Later, they both decided to put it into their savings account which just thrilled me more) We sold roughly 10 movies, 2 books (which brought in very little to nothing, maybe $5.00 for both) and 1 N64 video game. The kids made about $120.00, and we were all thrilled. They got some $$$$ and I got some space in our cabinet. We wouldn't have gotten half that at a yard sale.
It's best if you are able to add a picture to your listing, but for video consoles and games, everyone knows what they look like. I doubt if you can't add a picture it will hurt your final price.
Another suggestion, If you don't need the money right away, try running the search on completed auctions. I bet if you could hang on to it till closer to the holidays you will get top dollar for everything you have.