NX

So, along with the new nexon website, came a more sophisticated and detailed "GET NX" section.
Lately, I've been buying some NX and stumbled across the "review purchases" part.
It basically sums up how much NX you've earnt/bought/spent.

I am very surprised that in total, I've probably spent around $300 on a free game like this over a 11 month period...
How much have you guys spent?