Here's more info regarding this trailer. Someone posted a response to the Craigslist ad. It certainly sounds like the same one that Reace posted about rolling.
"This trailer did NOT just sustain minor damage; this trailer, as well as its tow vehicle, ROLLED. Plus, if this trailer's been out in the rain this week, the water damage has gotten into the insulation.
Massive torsion damage to this trailer, frame is shot, check out the axles, and why haven't they posted pics of the inside front interior? Because it's demolished.
This salvage dealer bit off more than he can chew and is trying to pass off his problem. Escape trailers are FANTASTIC, but unless you know what you're getting into...beware."