Don't get too discouraged. As long as there is no major roof leak it shouldn't be too bad. If you're handy and can do some mechanical work yourself that would certainly keep the cost down. Of course tires, belts and fluids. Brakes, hard to say, calipers could be frozen but you won't know until you try. Just about guarantee you'll need new batteries. Dump some premium fuel in it and see if it will start. We had a 1994 Bounder, various reasons it sat for about 3 years. Changed the oil, started it up and good to go. Oh, the propane tank does not have to be recertified. Only portable tanks need to be recertified, not permanently mounted tanks.