Lots of good solid advice in this thread, but a couple of comments to consider:
The buyer should be arranging and paying for any inspections, just as in buying a house, or any other property. If the inspection uncovers problems, then you have reason to negotiate down the price, to cover needed repairs.
It was mentioned that this particular motorhome has been garage kept, has seen low use (not necessarily always good), and priced fairly (to the OP). Those are pretty hard to find. Although I agree that oil samples should be taken, a very desirable coach may be sold to someone else before the test results are back from the lab. Depending on the lab, that could take from days to several weeks. So ask the lab before sending samples. The labs I've used can take weeks to mail a report, but will call if something concerning has been found.
