Rito thought they were being sneaky with the new personal sale stores

Ya, it's based on your playstyle. Judging from the posts I've been seeing and my own shop, it's been tweaked since last time to weigh your most used champions heavily as opposed to simply the role you play.

I just noticed that!!! If only they game me the one ahri skin I don't own on discount.

Yeah it goes off most played like Nami said. I remember because it's the same shop as from December.