I am not familiar with that particular unit, but IMHO...
a used unit is only as good as the previous owner maintained it, regardless of the make. Prior to my current unit, i always purchased used. I have seen some trashed high end campers and pristine older units.I havebeen known to make someMcGyver repairsat times, butI have been shocked at what some people will do to a camper and still think it is safe enough to tow or the lengths they will go to trying to hide water damage.
I think you said in a different post it was a 2002? $5 K is a pretty darn good price for a 2002 anything. That is what I sold my 1997 27.5 BHAerolite TT with no slide for last year (and it had some water damage with the previous owner - found when i removed an aftermarket "broom closet/pantry"). I would be looking that over with a fine tooth comb, looking for a reason why it is only $5K If it checks out, then I think you are getting a sweet deal!
Again, just MHO. Maybe some others can talk to the specific model. Good luck.
Mike and Kathy