>>1214571>ellipsesIn English, an "ellipse" is a geometric shape (see picrel). Maybe you're referring to the French word "Ébauche". In English, the proper word is "sketch". You should use that instead if you don't want people to keep shitting on you about it.
>game art, not fans"Fan art" means unofficial art made by fans, as opposed to official art made by the copyright owner. So fan art of game characters is still fan art.
>price fluctuates without any ruleOffer and demand. That's the rule. If you offer something nobody wants, you won't get far. If there is good demand for something, and you can offer it, then you could get paid well.