The economy of the game isn't enough to destroy the game. At least not in my opinion. The gameplay is still very solid and you can still have fun playing it.
The game is not nearly as dependent on its economy like others can be.
I agree, the actual game play and story was awesome the first time through.
But, I mean more about after that. Maybe grinding Paragon levels. Trying to get the best gear you can get. That's where the economy completely screwed the game up for me.
If someone buys it for the experience of playing it through then it will be fine.