Hey Rockin,
That story really sucks, if you can get $500-$600 back It might not be as bad a set up as you think. I have bought "staged" units and some I made money on and some I did'nt. There is no guarantee of value in any unit made by the facility to auction buyers, so it really doesn't matter if it is a typical customer unit we all think we are bidding on, or a build-up unit, consignment unit, or a garbage unit. This entire industry is poorly regulated and I know this is too cliche but it really truly is "buyer beware"! Remember, Don bid on what he could see from the door. He would have spent $1000 on that unit blind to any other knowledge.
One of the best units I ever saw was one of these "consignment" units, the lady scrounged up just enough to pay what she owed but was flat broke otherwise and knew she would not have the money next month. She asked the facility to go ahead and auction off her contents even though she paid up, and made conditions that she wanted just a few personal items out of it.
I have also seen the "garage sale" units were friends or family of the facility owner/manager load their personal stuff they are trying to get rid of and auction it off. Since there is no guarantee of quality, condition, or type of items in the units, I am not sure how you can claim a suit of fraudulent representation concerning the contents themselves. I guess you could argue you had no agreement to enter into a consignment contract with the tenant. If you plan to pursue this in court, I would'nt start selling off the contents of the unit until you get some legal advice.
I'm no attorney, so I can't say how far you would get with a lawsuit. You would be fighting a corporation so I am sure they could keep the case in limbo for a long time and drain you guys of time and money. I guess the only thing I would have done is refused to hand over the money when they started to push that consignment contract in front of me, and let them try to sue me. I am sure they would'nt bother and just sell it to the next highest bidder or re-auction it off. Like I said, not sure what kind of case you have, but you can certainly spread the story around the auction crowd and hope it hurts their auction attendence.
Anyway, I feel your pain, I have bought units that had a few nice things up front and nothing but household garbage and paper/junkmail in the back. Were these units purposely staged by the manager/facility? Were these units completely set up? Who knows, but it's just part of the business and learning not to over bid, remembering that 90% of all units are a gamble, regardless of if you spend $5 or $1000; everyone who gets in this business is gonna pay for a booger or two or even more the longer they stay in it.