First thing is you need to do is set your expectations. Listing a vehicle does you no good if you're expectations of reward are too high. As has been mentioned, you need to search Completed auctions to determine what cars are actually selling for. They may list for say $25,000, but if the are selling at $10,000 the value is $10,000+/- some. If similar cars are selling for well less than you expect to get, don't waste time listing yours.
You also need to evaluate how desirable your car is. If you're selling a 69 Charger, there's going to be a lot of interest. A 69 Coronet... not so much. So you might see where two guys went head to head and auction fevered up a price sky high on a car like yours, but that's no guarantee two more guys will do the same.
Second, there are pluses and minuses to every selling format.
- If you list a car with a reserve and a Buy it Now, most people assume the amounts are the same and if the Buy it Now price is more than they want to pay they won't bother bidding, which keeps bid values low.
- Selling without a reserve will increase the number of bids, but you're going without a safety net and most sellers want one of those. And if you set a minimum bid too high, a lot of buyers won't even place a bid.
My preferred method is to list as a Buy it Now with a Make an Offer option. My BIN price is what I hope to get, but then I can review offers as they come in and accept one that works for me.