Advice on pricing for pixel work.

[Star]

I know how it works when it comes to indie games, but I'm having trouble figuring out how to charge for commissions..for example: Pokemon sprites(single sprites) and SMK sprites(solo animation)
So I was wondering if there was like a price chart out there I could use when it came to sprites(I have one for digital paintings)or if you guys have any other advice that would help me with determining prices. Thank you so much!