If this RV was a Mountain Aire MH from Newmar, it is a quite high end Newmar. There are only 2 levels above it in the Newmar line. The 2014 Mountain Aire today runs from base around $425K and easily can go above $500K. If you are saying this is offered for $135K, then depending on options, this could be a very good price, IMO.
Can't help with the PW thing.
FMCA #F431170, GS #822128658, Escapees SKP #112655
2012 Airstream Mercedes Interstate Class B