2006 gas rig (acquired 2011) with an average yearly mileage of 6000 miles.
Reoccurring maintenance cost for the drive train maybe $100-$200, primarily oil changes and other such consumables or wear items. For the house about the same primarily associated with keeping the roof sealed and general water proofing. I do all my own work, so far. One break down 5 miles from home that required a no direct cost tow (ERS provided). Repaired myself in the drive way.
Now I've spent a lot on improvements such as HDTV, new plumbing fixtures, replacing steel hardware with stainless, better shocks, gutters, new vent fans,,. Overall I've spent a whole lot more on camp ground fees and fuel then I do maintaining the coach.