Sorry Jason, but IMHO air start engines are dinosaurs. With the technology we have today, autostart is so reliable and wet starts are only something you see because of pilot error or people flying the less sofisticated brands. I know that there are things like baby scuba tanks and so on, but they still require a master scubatank to fill them. So the cost of support equipment for airstart is going to run you atleast another 500 Euro or 500 Dollars just to be able to start it up. Plus the hassle of dragging it to the field. I have a combined 350 flights on autostart enines, and apart from having to replace o-rings once in a while, there has been no other expences.

Gerhard