take a bottle jack jason and jack up each wheel and see if the wheel bearings are toast, simple wobble test
besides that , you dont want mono leaf springs, they are junk
make sure it has a 3 - 5 leaf spring pack
does it have brakes on both axles??
does the jack work?? does the hitch work ?? this is the best kind of hitch fora bumper pull trailer
these kind suck
if all is good $350 is a steel of a deal