I'm pretty sure that all of the LGS that I frequent do not clean any of the guns that are put out. At best they may wipe them down but I even doubt that. So I'm wondering if the LGS even have them checked out by a gunsmith.
I can't think of any guns that I have brought home used appeared to have been cleaned recently.
How does your LGS handle used guns....?

Seems that a clean used gun would sell faster.

My LGS test fires every used gun that they sell. Whether they give them a thorough cleaning afterwards I don't know but I never bought a gun from them that started out dirty, meaning with powder residue or grease or grime, carbon, etc., nothing, not ever. So I imagine they do clean them to a certain extent, at least. I am pretty sure the gunsmith checks every used gun out, too.

New guns are a different ballgame; I wouldn't expect them to shoot, clean, inspect, or otherwise do anything particular with a new gun, not unless they literally see some kind of defect right out of the box.

***GRJ***

My LGS states that they do not test fire used guns and that all used gun should be inspected by a qualified gunsmith prior to being fired. They will guarantee function, meaning if it doesnt work they will refund your money but they are not responsible for it becoming a glock, er, I mean grenade. Yeah, so needless to say they do not clean them either. I prefer it that way. I have picked up a couple of sweet pieces that were NASTY I mean filthy! Mostly from long term storage where the motor oil or whatever they were last lubricated with accummulated dust and grime. A little time with a toothbrush and some Ed's Red, followed by some Flitz, Mother's Billet, and finally 2 coats of Ren Wax, and viola', a darn good looking gun emerges. Just got to be able to see the diamond in the rough that others dont want to handle because of its looks.

Over the counter of the used gun sales it says 'AS IS - NO RETURNS'. But I suspect if there was a serious problem they would make it right; in fact one did take a model 12 back (a year or so ago) that I found to be cracked.
But, look at this picture - it's lead fouling I removed from a model 34 I acquired recently. I don't think a gunsmith would have passed that, but I may be wrong on that assumption.
flundertaker - I'm with you, I always clean and molest my guns when I get them home prior to shooting.

Certain guns need to be cleaned for sale, but I hate seeing an over cleaned milsurp with pimp shined wood and metal. Blech.

__________________
Release the Kraken

LGS where I work part time we will test fire a gun before we buy it, but never clean them, maybe wipe down the outside. Usually don't do squat with consignment guns.

My experience is the same - only one or two I deal with give used guns a good cleaning. I bought my pre-18 last year from an old guy whose shop itself looked like it hadn't been given a good cleaning since sometime around the Korean War. The pre-18 had reportedly belonged to another old guy who had it on consignment. There were cobwebs inside the chambers, and so much grime I thought it was matte blued at first. After I took it home and cleaned it up, it shined like it had just left the factory, inside and out.

I am always amazed when I pick up guns at auction how filthy most of them are. I have bought several 1903 Colts in .32 caliber that the barrel looked like it had a .22 caliber bore, there was so much ****/lint/powder in there.