I'd be hard pressed to walk away from the model 15 at that price.
Being it's at a pawn shop, I would negotiate the price down, starting at $300 and you'd probably end up in the middle for a really good deal.
Put on your poker face and don't let them see you covet it or your chances for getting the price in your favor will diminish significantly
Here in northern Nevada, that asking price would be acceptable.
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