Hi, I'm not sure if this is still open, but I have art commissions open as well as experience working on VNs, check out my art blog here if you're interested.
A sprite set would cost you 15-30$ depending on the amount of facial expressions. I'm also willing to do CGs at a price of around 20-30$ per piece, depending on the complexity. Feel free to contact me on discord at Navypink#6314, on tumblr at @navypinkdev or @navypinkdraws, or via email at navypink999@gmail.com.