I started out a month or so ago looking for a 4" 25-5. Aware of the chamber throat thing, I shifted gears to something in the 29 line because the risk was just too high on a distance purchase. Ask a seller if he knows the throat diameters on his .45 and his eyes roll back, either because he doesn't know, or he DOES know. It seems almost irresponsible or suspect to offer a 25-5 without some reassuring info about the throats, or a 624 without mentioning the Circle C.
I'm surprised lately to see a 'head-on' approach to deception. Show a photo of the flaw, but under-describe it in the text. Call a pit a "freckle;" make sure a scuff is on a glare point but still visible; back up from the thick white cylinder line and call it the "usual turn line" -- that's evil genius right there -- and when you're called on it, claim you made disclosure. List the manufacturer's features rather than a description of the conditon (white outline, red ramp, 3Ts...). Deflect, distract, delay. The biggest catch-all bucket of all is "handling wear." Handled by me means it's like new, but by others, it could be anything. Past a certain pointit's called 'character.' Not even percentages mean much any more -- if you say it's 95%, tell me about the missing 5 and forget the rest.