My two bad experiences have both been with well-known/reputable dealers (one a national retailer with a "fine gun" room and the other a maker with a large used gun collection). In both cases, I asked specific questions about the gun condition, including action tightness. In both cases, the guns arrived with loose actions, despite assurances to the contrary. The "good" news in both cases was that the dealers made good on their misrepresentations, but there was still a fair amount of unnecessary effort and aggravation. In fact, with one gun, I sent it back for the needed repairs, and it came back 3 weeks later untouched, so I had to send it back again.
It led me to conclude some dealers will say what is needed to sell the gun and hope the buyer doesn't have the gun inspected and/or is not savvy enough to notice. And apparently they get away with it enough to continue doing it.
