Lessons learned. Our first RV, a gas front engine 26' GMC was $11K and then we put more than that into upgrades and repairs starting with new tires all around. Second one, a 34' diesel pusher was very low mileage (18K) and only 4 hours on the genset and very few repairs, no upgrades but more expensive initially. Third one turned out to be too small (Class B, 22' Sprinter, Mercedes diesel engine) when we thought downsizing was a smart thing for both economy and efficiently. We're currently on RV # 4 and are still making repairs and upgrades but the latter clearly our choice and not necessary for operating the vehicle. This was all over a period 12 years. If the PO (previous owner) has all records, all the better.