I bought this Cub Cadet / Agri Fab trailer used a year and a half ago. I don't know how old it is. The metal is pretty thin but it has survived hauling about 6 cords of firewood around the house so far.
The wheels that it came with are crap though. I have killed both of them and one replacement. I finally replaced them with a set of narrow CC front wheels that a member here was nice enough to give to me. The hubs would just collapse with any weight in the trailer.
It has held up pretty well so far with the replacement wheels. I'd like to find a well made trailer with tapered roller bearings instead of the lousy ball bearings that this uses on the 3/4" axle.