They produced them on both Ford and GM chassis, and both are good. A little over 4K a year in mileage means that it got used.
Are you buying from a dealer or private party and is there a link to the ad where we can see better what it is and what it has.
My best suggestion is to learn as much as you can, and / or hook up with somebody that really knows them and what to look for. Look in the bedroom closets and there should be a build sheet listing all the systems. Take and print a picture of it and check off everything that is on that list as you are shown the item and verifying that it works. Don't leave a deposit and make sure that everything works before delivery.
Check yours against similar coaches in RV Trader as far as price.
Any other questions, pop back and ask. Somebody will have an answer. It may be a SA answer (probably me), but still an answer.