I expect that you will go and inspect the rig. When you do, check for water intrusion (soft spots, water marking) around all windows, slide outs, and especially in the cab over area. Most on the forums feel that water intrusion is a no-go, unless you are willing to put a lot of time/money into the repair, or unless you are handy with do-it-yourself projects.
Make sure all appliances work. Make sure the slide works as it should. Fire up the generator and make sure it works as it should. Check the tires for date codes. Consider that the tires should be replaced at six years old no matter how good the tread looks.
In general, 70K miles is not bad for this age. RVs need to be run and used. Beware of low mileage in an older rig. Good luck with your search.
