Yes I sell my models and to be honest even though I sell quite a few there really isnt a lot of money in it, Just enough for me to take the girl out for a meal once a month. Do it for the love of doing it, you aint gonna become a millionaire over night.
I sell most of mine through 3d market places and they can take anything upto 60% of the sale price. If you are considering selling any model make sure its good with no errors, presented well with accurate technical details. There are far too many poor quality models for sale with unrealistic prices. Take a look at your favourite game from last year or perhaps the year before, if you cant match that quality dont bother because you wont sell. Dont think you can upload something thats a bit dodgey and just charge $5 for it as most buyers will see straight through it. Charge a fair price and your model will be taken more seriously.
I`m not suggesting that you would do any of the above and I am sure your models are of high quality.
[url/]http://www.3d-for-games.com/forum/index.php[url/]