I just upgraded my storage space. It is expensive in my area (West Coast of Florida). I pay about $250 a month for a 12.5' x 45' space that is covered (like a giant car port). It has un-metered electric at each site. The storage lot has an area for you to wash your RV/boat and also has a dump station. There are TONS of cameras everywhere and they have a bunch of TVs in the lobby where you can see the whole lot. I hate spending that much money each month but its secure and keeps my RV out of the elements. Most storage lots around my area want $80-$90 just to park in a parking lot without electric, cover, etc. What I have noticed is costs vary A LOT depending on what part of the country you live in. I only have a 30' TT but plan on getting a Class A soon and it took me a little over 2 years on a waiting list to get the '45 spot. Supply and demand dictate the price.