Lots of discussion around cost but don't forget coverages. Some companies offer person effects coverage with a minimum automatically included. Other companies will tell you that you don't need it and it is covered under the home. If you have a loss with your RV involving personal effects this means two deductibles and a claim on your home policy. The same with liability coverage, you may want vacation liability coverage for your campsite which some carriers don't offer. You may be told that your home policy provides this but some will exclude it as they consider your RV a secondary home. The point is to ask questions about what is covered and by what policies. How are deductibles applied? The $50 you save in one year gets eaten up quickly when you have to pay a $500 or $1,000 deductible on a second policy.