These little trailers don't seem to last long enough on the boards to get an inspection, they just sell too fast. It does look like water damage, we had the same problem in our 16' scamp
and it was not difficult to reseal the window. We did it ourselves but probably would not cost anymore than what an inspection would. The people at Scamp
Co. are wonderful with help and advise.
If you really want one of these little eggs speed in bidding is necessary. Good luck and welcome to the forum.