I was thinking about the same thing. I was intrigued when I saw the thread title. Although I have been interested in pixelart for a long time, I decided to share it here. I find it wise to create demo content and then ask for money for more difficult stuff. Let them download the demo ones first and see if they're available. Then you encourage them to buy for the future if they like it. It will be an opportunity for them and for you. But I recommend doing your work sometimes in completely free stuff just to be an advertisement. To protect traffic. These are my thoughts.
Good luck. -Talha