I got my budget airbrush, compressor and paint from Finishing Touches at Ally Pally show last year, I'm really pleased with it. It uses glass jars for the paint which I find great for weathering. They are at the Chapel-en-le-Frith show this weekend and I bought another similar airbrush from them for just £18, this time with a paint cup for doing more detailed work. Finishing Touches can be contacted on 0116 278 5134. No connection with them other than as a very happy customer.