The new Immortal Journey skins do not deserve to cost 1350 RP
Compare the new Yi skin to Cosmic Blade, compare the sword Fiora to Project, and compare the sword Janna to Star Guardian - the quality of the new skins is drastically lower.
Over the past 2 years, Riot has been pushing out mostly very high quality skins that deserve to be priced at 1350RP. Sadly, this new set of skins are not at the quality of the standard 1350 skin.
When Lunar Wraith Morgana was revealed, everyone complained about how the quality wasn't worth 1350RP, Riot listened and lowered it to 975RP.
Example of 975 skins with new spell effects: Blood Moon Thresh Festival Queen Anivia Pug'Maw Sir Kled Pool Party Draven Arclight Vayne