I live near enough to get there 1'nce a month or so.
Dave himself deals with the guns. He's a shrewd trader, but not hungry for profit. coyotejoe said it well.
Everything is in top shape before it's sold, or if a true antique it's condition is fully disclosed.
Some of those custom made guns are REALLY nice, they ARE worth the money asked!! Some of them are on display in the showroom, and can be handled if you ask.