I made a 2 minute survey about LoL spending habits for one of my classes. Thanks in advance!

Hey summoners! I'm currently taking a business research class, and one of the things I'm trying to do is calculate a lifetime value of LoL players. I haven't been able to find any information on the topic outside of this Gamasutra article which estimates(?) the number at $125. I can't find any data on where they got this number from, so I figured I would try to calculate my own lifetime value.

The survey should only take 2 minutes, probably less than that. Thanks in advance to everyone who participates!