The sale

Ok. So irelia is my fav champ and I really want the infiltrator skin. But I am not allowed to buy RP and have only the default 400RP. I was wondering if there are any alternative ways to earn the final 87 RP.

Not sure if this part is against TOS, pardon me if it is: In case there is no other way, can someone add me in game and gift me the skin or gift me just 100RP? ( will be able to accept the request on Saturday) Pleaasee!! If I don't get it now, I probably can't for the next 1.5 years.