My boss bought one about 18 months ago and whilst they are nice and cheap, they are the reason that I decided to build my own. The welds are crap (draw bar only tacked on despite being advertised as full off road), dross all through the gal coat, no sealing, trailer plug wiring back to front, floor warped very badly, just to name a few. And once he started using it, it leaked like a sieve. Yes I have actually witnessed it. Better to buy good quality second hand.
Cheers
Wes