hi,

did they cut the cheaper upgrade cost for 75/100 girls ?

"We are also taking this opportunity of changing the prices depending on the rarity, to reduce the amount of affection and money required for upgrading. We want to improve the situation of expensive girls for the players, that have lots of them due to the current way of defining the price. We don’t want you to feel punished for having lots of girl by increasing the price for you, but instead each girl having a fixed price according to her rarity.
Players that have 75 girls in their harem will have prices cheaper on average by 10%
Players that have 100 girls in their harem will have prices cheaper on average by 33%"