Only logical response to this is to rollback the servers to before the event.

After spending a small fortune to be able to obtain Five Kage Madara last event cycle, to find out that he was gotten for as little as 7k is disheartening. The only compensation that would be remotely acceptable for this is to fully reimburse the 13k to the players who spent the full price. No amount of foodsacks/frags or whatever else you think would compensate it, just isn't gonna cut it.

I know this sounds like i'm whining (and I suppose I am a bit) but for me to pay an extra 13k for something that I thought was a good deal at the time only to find out that a week or two later he was able to be got for less than 50% of that price is annoying.