Sweeeet. I used to have a short bus and Im working on getting another one right now. I really like them vs. RVs because they can take a lot more driving, are usually diesel, are a bit higher off the ground and in general you can get a more sollid bus for a cheaper price then a shitty rv. That and they are way more gypsy wagon to me. They are usually small enough to park around but big enough to be private and comfortable.
Im always lurking craigslist for buses and I would say you can get a solid bus, that was possibly maintained by a school or church or something for 3-6000. In the bay area where I am there are often already semi converted buses that pop up all the time. If you are willing to head to auctions you can get real deals also.
Just kinda posten this info for peeps.