Personally I feel pointing out that pix has new animations and a new model and then using that justify the heavily increased price isn't really fair, since Lulu herself has no new animations in this skin, just new particles.
Riot has already created plenty of excellent new skins for us in the past that involved new animations for the character and they were still 975 RP. Just because Pix has his own model doesn't make the skin "more valuable" to me from a consumer standpoint, if anything, this skin is underwhelming compared to some of the other existing cheaper ones, (Sad Robot Amumu, Blackthorn Morgana, Arcade Sona, even Butterfly Koggie) since as I already pointed out- the champion herself acquired no new animations, its technically 100% particles from an in-game point of view.
I appreciate the effort put forward by Riot's artists and skin team but the new price is pretty bogus in my opinion. :/
Edit- I will be speaking with my wallet and I hope you folks will as well, if this new price point doesn't sell well Riot will stop trying to increase prices for a while, don't buy it if you don't want prices to increase!