I have seen fairly new RV's where the owner did basically nothing to maintain them, and they were JUNK
Some RV parks ask the age of your rig, 10+ years they don't want you in their lot (I assume they have so much business they do not need mine so I don't park there, And that goes back to before this RV was 10 MONTHS old).
A friend who should be returning to GA shortly has a beautiful Blue Bird Bus, well maintained it looks every bit as good as one just a few years old that was once parked next to it so we could easily compare.. IT's over 25 years old. Oh yes, he has a bit of a problem finding some parts (and an easy time with others) and he's had a few age releated issues, but inside and out that bus is BEAUTIFUL, in fact there is a publication that features high-end Motor homes.. Yup, last year they toured his rig with cameras and published it (As close as I'll ever get)
My own 11 year old rig gets complements on it's appearance. (I wash and wax from time to time)
My advice is to go over it. If you find soft spots in the floor (Both the 1st floor and the 2nd (roof) floor) if you find places where paint is pealing, or where wall paper or siding is "Bubbled" and de-lamanating, If things do not work (Any things) if you see problems of any kind.. Walk on and do not buy (unless it is a very simple problem YOU yourself can fix)
If the thing looks like it is sitting on the showroom floor (like Wendall's BB) GO FOR IT.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times