There are three main types of RVs, each one of them falling in a distinct price range. Travel trailers are the cheapest type of RV because you must tow them with another vehicle. Class C homes have an extended cab, but they still need to be towed. Class B and A RVs are going to be the most spacious and have their own ability to be driven wherever you'd like them to, thus making them much more convenient than other campers that need to be towed.