i know you asked for cheap and i'm no expert on airbrushes but my first one is an aztek, ok its not cheap but i thought if i buy cheap i may end up having to pay out again further down the road if something goes wrong with it,
the aztek airbrushes have a lifetime guarantee, anything goes wrong they send you a new one, so you pay once to buy it and never have to pay again,
heres a pic nearly the same as the one i got, mine is an Aztek A7778
http://www.wheelspinmodels.co.uk/i/2...FasK0wod3tgJJQ