I bought an 11 year old Beaver last year. 34k miles at the time. Looks new on outside, everything works. After first year (last April) I put about 1800 in it replacing all fluids in engine, tranny and generator. All filters replaced including hydraulic, oil and fuel, chassis lube, oil hubs, basically everything I could think of. Then the exhaust pipe, alternator and a metal cooling line.
From now on I'm hoping to spend a lot less.
Would I do it again, oh hell yeah! The beaver is a great coach, everything top of the line, tag axle, HydroHot heating. I could not afford a coach like this new. It handles well and rides well. Goof luck.