In the "Dead Island" (DI) video-game, what changes occur in New Game+ (NG+), in comparison to non-new-game-plus?
Acceptable: In particular, I want to know how prices are affected. Someone asserted that diamonds sell for more ($1.65K) rather than $1.5K because of how many times that they've beaten the game.
I am otherwise familiar with the end-game. I don't think it matters but I play on the "OnLive" platform.