Since you're new, let me share some advice before you get flamed. Folks don't like it auction type sales around here. You should just choose a price. If you're not sure what it's worth. Try half of retail. That's what I would pay for something used. For tanks I have a rule of $1/gallon. Or you can ask at a higher price then go down until someone's interested. Trades are a bit different, but you should know what you're looking for. Good luck in selling the tank. Does it come with a stand or anything?