Still in development.
Who do you plan to do beyond the four shown?
Juniper/Bianca/Fennel?
Elesa and Skyla?
Anthea and Concordia?
I'd ask about Lenora but... yeah I understand not wanting to touch the lady associated with the mammy stereotype with a ten foot pole, even if she's cool... and she has a loving husband too unlike all the others here lmao.
Hard to say before writing anything. If I'm not putting a price on my own time and effort, sprites plus CGs could be between 500-1000 bucks.
Skyla and Elesa seemed like obvious options if I were to make another chapter so I'd thought of them before but they don't prticularly interest me like the previous girls have.

Never thought about what I'd charge for writing commissions. If we're talking something the size of a unova nights chapter it'd definitely be a couple hundred bucks, not including what I'd need to commission in artwork.
And yeah totally, I'd be honored that someone thought this was good enough to pay for.