FWIW, the $1600 to $1800 new trailers have thinner frame rails and bend over time. They also come without brakes; break a way switches and cheaper ramps.

The trailers in the $1800 to $2500 range have stronger tongues, thicker frames, better ramps, brakes, better lights and wiring, ECT. Then you get into options like tool boxes, air deflectors, ECT.

In trailers, you get what you pay for.