Dang, that is one big boy bike. If you're well over 6' 3" that's your size. With old bikes like this the price usually depends on the condition of basic consumable parts. Tires, chain, cables, etc. etc. etc........ If it looks like it will go a couple thousand miles before it needs any new parts then it's probably worth around $200. Knock about $75 off the price if tires are dry rotted.