Welp, at this explains the lack of Janna nerfs in the last weeks.
A 1350 skin? Well, usually I'd say that skins don't rake in that much money, but with such pricing...
Well, that makes 10€ per skin sold, given that according to some random statistic only 1% of players even buys stuff for real money (number taken from unreliable memory, so handle with care), and then we assume that of those people maybe 1% will buy it (altho it surely will be more given Janna's massive playrate and winrate), on 62 million players that makes a minimum of 6.200 customers, all paying 10 bucks each, making 62.000 bucks the minimal amount of cash they are going to rake in with it. Good, now let's assume that five people worked on this skin for a month each, and I'm just going to assume that they are all just going to be paid 5.000 bucks a month (no clue, I just pick a random high number here), makes still 37.000 bucks in profit.
All for one skin, and that is the number assuming potential customers being 1% of 1% of the playerbase - and let's not forget I'm only talking about one single skin here and am not accounting for the champion being widely popular due to a mix of the meta favouring her so hard and her outdated design just fitting abit TOO well into her intended niche.
37.000 in profit... well, that's more than what I earn in a year, that's for certain... I guess that's what you get when your playerbase is in the millions...