Our 2004 has been excellent as far as what Monaco put on it. Workhorse chassis had some problems but your's is a Ford so I don't know about the chassis.
My slides are both electric gear driven. Snapped a gear tooth on the bedroom slide, replaced gear and it was fine.
If something happened to this coach I'd go try to find a used one just like it.
How much are they asking for it and how old are the tires?
2004 Monaco La Palma 36DBD
Workhorse W22 8.1 Gas Allison 1000, 7.1 mpg
2000 LEXUS RX300 FWD 22MPG 4020 LBS
US Gear Brakes