Good morning Mel
I have an 06 Daybreak 3272. I bought it new. I have had a few problems but nothing major. All the components have held up great. The Refrigerator, A/C's , water pump, water heater etc. A couple problems I have had was new and under warranty the cruise control went out.It's a ford V10. The only other problem I have is after 10 years the hydraulic hoses are blowing out. Theses are for the jacks, the slides have electric motors. I'm approaching 60 k miles and it still runs great.
On the issue of the hoses, they had a recall years ago, they ran the hoses too close to the engine block, make sure they have them tied up away from the engine.
39900 seems like a fair price. 28800 miles for that year is great.