The LGS just got a 4 year old 6" GP100 that looks virtually new. Looks completely original except that it's got nice fiber optic sights and the newer style Hogue grips. He's asking $619, which seems way too high to me. I see these new at Buds for $575, which would put me at $600 after FFL transfer fees. What's the gun worth in excellent used condition with the fiber optic sights? $500-$550? I like the gun, but no way I'm paying new price for a used gun.