The local gun shop has used 870 Police Magnums priced between $240 and $280. For what I can tell, there is no difference in the conditions of the shotguns across the price range. Externally, they look a bit rough, but each one I looked at cycled well, locked up, safties worked, and no rust. So, is this a good deal? One more question; each of these shotguns were marked as having 18" barrels. Would one of these guns be legal for me to buy, without having to go get a $200 NFA permit?