Well, I am a new PSN user (got the Vita in february, do not have a PS3) and I have some questions regarding its use/functions, maybe here is not the best place to ask, but...
1) When I browse the PSN store on Vita, all itens shows its price, even the ones I already bought (there is no "you already have purchased this item" like in Xbox Live or Steam). What happens if I click the buy button again? Will I be charged twice??? I ask because it is pretty difficult to distinguish new itens from itens I already bought in some titles, specially DCLs for Ridge Racer or Motorstorm.
2) I assume there is no and will never be a PC browser-based store (that will be too smart for Sony...).
PSN is really bad designed if you compare it to other services (360, PC), why the hell Sony does not improve the user experience...