Our organization bought a 6x10 foot cooler trailer from CoolerTrailers.com in Florida. It was overpriced and shoddily constructed. It arrived with CoolerTrailer.com advertisements all over it (we ordered a plain white one), there was a gap in the paneling by the trailer tongue where water could get under the floor boards and into the insulation, and the refrigeration unit didn't work (a hose broke in transit because of faulty design).
The company refunded us $300 to get most of the lettering taken off, but said that the rest was our problem. They wouldn't refund us any more money, and we couldn't afford to return it because we'd had it shipped to California freight.
Now, 2 years later, we've realized that the inside paneling isn't sealed well (so you can't hose it out without water leaking through to the insulation) and some of the screws on the outside that hold the panels on are popping off.
I wouldn't trust this guy at all, don't buy from CoolerTrailers.com!