hmm, last time I looked Apple don't let emulators onto the Iphone, unless your the company that owns the system, aka Sega.
I know they had support from the company that owns Commodore for the C64 Emu.
but um, I doubt the legal owners of the Amiga kick starts will give their support.
As with the C64 Emu, I think it will just be a crappy store, and you wont be able to play any other games. Or even get to workbench.