I'll buy it on my Vita for 10 dollars... and play it on my PSP if the battery on my Vita is dead. Or I get the PSX original for.... 10 dollars and play it on my PS3/VIta/PSP (When the Vita has it's PSX emulator installed). Why do I have to spend 18 dollars on this? And why do I have to buy it twice for different IOS devices?