This was the starter set I bought -
3 Airbrush, Air Compressor, And Air Hose Set
$100, everything you need to get started except the paints. The compressor is good enough to start playing around with but won't do for serious work. The air hose is surprisingly good quality and I'm still really happy with the dual action gravity feed airbrush!
Oh, and as others mentioned already clean your airbrush thoroughly after each use! It's seriously important!