In real estate it's "location, location, location," and with old cars and pickups it's "condition, condition, condition"...which is hard to assess without photos.
Location can play in to the value a bit more than some folks think.your meaning of real nice shape too someone else it may be junk.pictures may help but even they can lie.probably do search for other for sale then compare theirs to yours.then see what they sell for not what they ask but what the buyers paid