Hi, as in most things the sky's the limit in what your'e prepared to spend on equipment. The airbrush with the greatest reputation is Iwata, there are loads of models available. These probably range from about £120-£350 depending on which model. Pretty expensive but will last a lifetime with care. However, if your on a budget like me, I would urge you to try a PREMIAIR G65, you can get them from
Oi Home I got mine for about £25 I think and can honestly say they are almost as good as any Iwata i've used. There basically Iwata copies but manufactured cheaper. Great detail and smooth trigger. And easy to strip and clean too. For the money its a no-brainer. I'm going to airbrush some makeup and am confident it will give great results. And btw, I don't have anything to do with the company lol. I just bought one a while ago and was stunned at the quality for the price.
Can't help you with bridal charges i'm afraid, just do a search on here.
Temporary Tatts, try
Temporary Airbrush Tattoo | Airbrush Tanning Equipment | Body Art Airbrush Tattoo Stencils - TatStore loads of info and products on there. Its a growing industry and could prove very lucrative in the right area. Good luck