the lady that taught our wilton classes Taught an air brushing class a week or so after only charged like $25.00, we got to play with their supplies to see if we liked it. we also used sheets out of coloring books to Practice, then we we also taught how to Make a stencil for them and how to put it on a cake then how to color it in. it is really cool to use . but you can tip the thing over and spill dye on your cake if your not careful.
but you can get the kit for about 175. or so. and it comes with tons of colors and they last a really long time. I bought one with a great discount b/c they had opened a new one for class.. but didnt use any of the coloring as they already had some open.
I haven't used it a whole lot but love it cause I know its there if & when I want to. So what I would Suggest honestly, is to take the class & see if you can live with out it for a while or if you just have to Have it. this way you can "Try before you BUY! ( gotta Love that!) Let me know if ya get one how you like it.