You are in the exact price range we were in 4 years ago. We found a well maintained 1996 Tioga Class C for $9500. It had a new roof, awning and the owner was only selling it to pay off debt.
With the new floor, some minor (for me) repairs and solar we are still under 15k.
Long story short; If you aren't very handy you should think twice about taking on an older MH. You would be hard pressed to find a better coach than we found for the money...... Everything except the genset worked when I bought the MH.
Here is a list of what I've done in three years;
Replaced AC compressor/accumulator
Bought used onan genset and cross-canned to get one to work. Had to fabricate part to get frozen rotor off.
Cleaned burner on refer
Replaced temp switch on water heater
Replaced fuel filter
Replaced covers on the roof
Replaced bad vent motor in bathroom
Leak under kitchen sink ( at water filter )
Installed solar (very cool..... used it to power Christmas decorations last night while taking everyone to see Christmas lights.)
New Siphon vents on Grey/Black water vents.
New antenna for OTA TV. (old one broke at hinge)
More stuff I can't remember right now I'm sure.
edit; New motor for furnace.