Part exchange or private sale? If you are offering your old motorhome in part exchange, a franchised or independent dealer will make things easy but will try to give you as little as possible for it. Make sure you know what your motorhome is worth before you start negotiating. Selling privately means you will have to deal with the potential buyer. Nevertheless, if you follow our advice, you will avoid many common pitfalls and should get a better price for your motorhome.