I fellow I work with has an Eddystone P14 that he offered to sell me. He's had it for years and just wants to sell to thin his collection down. I haven't looked at it so I don't know if the numbers match, but he says it's "all original" and has a cracked front handguard. Let's say the gun is nothing exotic, what would be an average price for one in sound condition? I don't want to insult or lowball him.