Read his post,he was talking about shotguns in general.
OK, but it's still wrong. Would you say an old LC Smith double is worth only $200? How about a Remington 31 or an Ithaca 37? If you can find a Purdey or a Holland for $200 you're a waaaaaaay better haggler than I am.
We're not talking about old junk like a 20-year-old 870 or a JC Higgins or something. What he said may be technically correct, but it has no bearing on the OP's situation.