Unlock your gachapon box event

Actually, you could profit off of boxes without spending NX, depending on how rare of a drop they are. Just sell to the NX hoars.
You could also buy Gach-box rewards in large numbers as the event drew to a close and resell them a month later for significant profit.

I wouldve liked that idea a year ago, when they were actually worth something. Now they are like 50k-500k....