Many people use the term “RV” to mean “motorhome,” but technically a travel trailer is also an RV. The difference between motorhomes and travel trailers is that motorhomes have a built-in engine while travel trailers need another vehicle to tow them.RV costs $20,000 to $100,000 on average for a towable trailer. Motorhome prices average $50,000 to $600,000, but some luxury RVs cost up to $2,000,000. These prices do not include sales tax, dealer fees, or registration. The cost of an RV depends mainly on the size, type, and features.Many people use the term “RV” to mean “motorhome,” but technically a travel trailer is also an RV. The difference between motorhomes and travel trailers is that motorhomes have a built-in engine while travel trailers need another vehicle to tow them.RV costs $20,000 to $100,000 on average for a towable trailer. Motorhome prices average $50,000 to $600,000, but some luxury RVs cost up to $2,000,000. These prices do not include sales tax, dealer fees, or registration. The cost of an RV depends mainly on the size, type, and features.