At first I was going to give benifit of doubt that poster just didnt set the calander on his camera, but actually posting 5 yo pics ?
My thoughts. I wouldnt pay $3200 for that trailer even if it was as pictured. Notice they carefully cropped the ramp hinge ? That's usually the first area to disintegrate on steel trailers. There is no tack area and $3200 isnt far from what you can buy a new or nearly new steel trailer like that for. But for a 16 yo ? Now personally I wouldnt buy steel at all , But that's going to be a $1200 trailer at most. Assuming it is safe. Check the floor, frame, and ramp hinge closely. But even then most I would give would be 12-15 hundred.