is the UK's largest online marketplace, attracting thousands of buyers and sellers daily. Buyers can get a good 'feel' for sellers' reputation by looking at their feedback score and many dealers offer some or all of their stock on Ebay. You don't have to enter an auction (though it can be fun!), you can look for items with a 'buy it now' or 'make offer' option. Alternatively you can just look for Classified ads - the choice is yours and you might just find a bargain. Registration is straightforward and even if you're not buying yet, you can monitor sold prices of motorhomes that you are interested in by using the Watch feature in My Ebay.
If you know nothing about Ebay, is a good place to start.