Harbor Freight sells em for cheap. If you don't have a store around you, you can check em out online.....
http://www.harborfreight.com/air-tools/paint/deluxe-airbrush-kit-95810.html
I know some people that use these with great success. And for that price, even if it does break or malfunction some time down the road, buying a new one isn't really a problem.
Good luck and welcome to the forums and back to the hobby!