If you want to sell a Wii on eBay, you have to be shady like all of the other idiots. You have to put 6 games and 4 controllers in the title. You also have to make the buyer believe that he'll never ever get another chance for a Wii, and that if he doesn't buy it, his children will die.
Yeah, it's tricky selling a Wii on eBay. I've already failed twice. Had luck with CAG though.