hey there, i hope you are doing great.
I am Napoleon and i am a pixel artist with some experiece with pixel looking games, assets, sprites and animations, here on freelance you can see some of my work examples, my rate per sprite is 12$/sprite for a 32x32. but some frames actually take less work than others, per hour is 15$/hour, but we can get a deal, depending of what style do you need and what are this 20 animations that you need, please understand that ones take more work than others, but with the right knowlage i can give u the rithg price and timing for all that work
Plese have a good day.