I mean, I know why $$$$$$, but this is so obvious, it made me look at riot with disgust.
I never buy chromas, but for winter wonder soraka, I thought I'd get the ruby one, since it gives me a christmasy feel. There's 5 chromas and ruby is only available in a bundle, which is fucking 1450 RP. So if I want a ruby chroma, Id basically pay for another skin, which I sure as hell won't do.
This really bugged me, I know they want all the money they can get, but this is basically a scam.