If I ran it like a business, I guess I would also do Ebay. I think for the casual collector, Discogs' low cost and easy maintenance works out better. I sometimes just end up buying more records from Discogs with the money from selling anyway. Also, while you can use the info for selling anywhere, I love that Discogs maintains a database of all past sales, giving you a better idea of what to ask for in price.
RE: Hello from Wax!