( This is a LEAK. Treat all the information below as unconfirmed and speculative until it can be confirmed. )
Summoner Zyrelia noticed something fishy popup in the NA in-client store. The NA store has since been taken down for emergency maintence. Unsure if this is a slip up for a future skin, something that's been cancelled, or what.
In a forum thread about this incident, Damiya commented:
"Hey guys,Clearly this wasn't meant to happen and we've got the store disabled while we look into the issues.
I appreciate your patience and I hope to have more information for you soon."
It appears that a lot of other weird things were purchasble during this time, such as skin and icons for the not yet implemented Spirit Guard Udyr . Anything that happened to slip through with this store error will likely be refunded and sent on their way.