Yeah she did this stupid thing of putting a much higher price to pretend she's giving a 50% discount, does she think she's dealing with kids or something? everyone knows it's silly, apart from the other stupid thing she does which is pretend the set is limited and only has 10 copies, which is another lie because whenever it gets to zero she always adds more copies to sell. she only stops doing that when there are new sets being sold in the next month.
She did all that and something else even worse which I think is the reason for this sudden price increase.
Did you notice that Marin's Gumroad set doesn't have videos?
Well, there isn't, but whoever bought the set, soon after buying it, received an email from her with the title:
"Special Gift! Kitagawa Marin hot videos! You were specialy chosen!"
Which was basically a link to buy the marin set videos separately.
So basically the marin set was just the photos for 80$ but with the fake discount it was 40$,
and them the videos that were in the link the price was 60$
but also had the fake discount leaving them at 30$,
so everything together was basically at 70 $.
And the videos were basically 6 short videos as usual and a 3 minute "special" video where she takes off her clothes and does some poses.
And my theory is that it was because of this set that she raised her prices.
Because she raised the prices so much for this set knowing that it would sell way more than usual because of all the hype around Marin.
So she probably used it as a test, and because of the absurd popularity of the character she probably sold a lot of sets,
and she saw it as an opportunity to raise the price since before it went up and it still sold a lot,
but I think that was a mistake as it only sold so much before because the character was extremely popular.