I've owned the MH in my signature since the fall of 2005 when it had 32,000 miles on it. Repairs and approximate cost since then are:
New Tires........................................$1850
Koni FSD shocks....................................650
Add rear air bags..................................275
New spark plugs.....................................50
Replace hot water electric fuse.....................25
Replace hot water electric element..................15
Replace batteries (3)..............................350
Align front end....................................150
Re-balance front tires..............................40
Replace air lines to inner duals....................20
Replace brake pads.................................190
Flush and replace brake fluid.......................20
Air filter (twice)..................................40
Oil and filter (annually at $50)....................450
Changed tranny fluid to synthetic and filter.......150
For a total of about $4025 over 8 years of use and 48,000 miles. That makes about $500/year. The tires are due for replacement next year, so that will bump up the average at the end of next year. I may have forgotten a couple of things, but not much.
I've also invested in a spare engine belt, spark plug coil, and house water pump that aren't in the above list.
Please note that the only "hired" labor in the above was for the tires and alignment. If you have to hire all the labor, the number above would double and likely triple (partly due to unnecessary things being recommended by the mechanics involved).
If you have a DP and hire the labor, it's going to be even higher.
Mark
2000 Itasca Suncruiser 35U on a Ford chassis, 80,000 miles
2003 Ford Explorer toad with Ready Brake supplemental brakes,
Ready Brute tow bar, and Demco base plate.