Spotlight your car on Autotrader, don't bother with ebay. I have found nothing but people that bid and don't buy. Autotrader is the best IMO. Make sure you buy a spotlight ad. Also, make sure you are priced right, if too high you won't get any actions. Also in the equipment section where it vin explodes your euipment, erase that and write up your own. You will get more looks doing that. Alos, and nice trick, in the color description, people can see the color of your car, so write something specail about your vehicle in there, like custom wheels or something. Take good pics and atleast 9! Good Luck!!!!
Sell your car outright, you will get more money. It is extra work but worth it. Use New Cars, Used Cars - Find Cars at AutoTrader.com and spotlight your car. Do a search on similar vehicles and make sure you are priced to the market.