I find one challenge buying used is some people don't seem to notice things like, out of spec light rails on pistols, canted sights, rust, damaged or missing parts etc.....
I bought a third hand pistol on the E.E. a while back and it turned out the OP was the first owner.....
It was a Railed Tactical SAM and when I got it I was surprised how badly machined the accessory rail on the frame was. It was visibly out of spec just eyeballing it and sure enough nothing fit correctly.
I must say Wolverine went above and beyond replacing the frame for me as a "third owner" but it goes to show that even though the gun passed through two gunnutz hands before it got to me..... Neither one noticed the issue?
Oh I almost forgot the other issue was that the right side of the ambi safety was bent as well, the way it was bent it must have been a factory issue as there was no marring of the finish despite the obvious distortion.
If I was in Carmel's tax bracket I'd probably buy more brand new guns and not sweat the premium.... but as other have posted some classics are only available used and they don't make them like they used too when it comes to hand made, classic blueing and nice wood.
Modern manufacturing has brought the price down and accuracy up for low budget guns but the soul is lacking.....