$350 is a good starting point if you want the money out of it and don't mind waiting for the right buyer. $250 would get it moving faster. $100-$150 would have it gone same day. Just my take on what I would expect here in Ontario. I don't need another one yet, but at $100-$150, I'd fire the truck up and go grab it if that popped up on the local market place.
What size is it? 3'x3'? 30"x30"?