I have sold a couple motorhomes on eBay. It's a good way to find potential buyers. Most buyers will want to inspect the unit before they close the deal which is reasonable. Be as detailed as you can on the description, what's good, what's not. Take and post lots of pictures and be prepared to answer a lot of questions. eBay will take a fee to post the unit, typically a small amount, and then a percentage of the final sales amount.
Tom Wilds
Blythewood, SC
2016 Newmar Baystar Sport 3004
2015 Jeep Wrangler 2dr HT