We bought a 1998 Four Winds 5000 class C with 36K miles on it last September in very good shape with new tires and batteries. It came with all the manuals but no service records. There were no major problems, but I have put in another 4K in preventive maintenance and upgrades. I've done the upgrades myself, except for the new Dometic 320 toilet, to hard to get on the floor for me.
What I am saying, plan on investing a lot more money in an older RV. For instance with only 36k miles on my unit, it needed tie rod ends and a pinion seal. I did a lot more than that to it. So put money aside, you will most likely need it for repairs and upgrades not obvious a the time of purchase.
