Hello,
I owned a vita 2 yearsago, but sold it. Now, I went to ebay and bought a used one with 6 games and a 8GB memory card.
I had bought some games in the PS store (FF6, FF7, Dont Starve, Darkest Dungeon, Salt&Sanctuary). All of them work perfectly on the Vita, no extra costs. I long time was not so happy. Really, I also bought Farming Simulator 18 and Soul Sacrifice.
Really, a very good system. My 3DS is now dusty.