I would sell FFXIII. You will get a good price for it. The console itself is worth the money but the game ? I dont think so.
I never understood people which played games especially RPGs without understanding it. I wouldnt even play a RPG if I understand just 50%. Ofcourse everybody is able to play the game without comprehension but you miss the best part of FF. I imported me RE3 from Japan so I could play it as soon as possible. After I played the game I wasnt really satisfied because I did not understand what exactly happened. And RE3 is a TPS a Jrpg without story wouldnt satisfy me at all.