TIL in Japanese, the term request (リクエスト) means both "ask the artist to draw something for free" and "ask the artist to draw something for a fee".
because in English, it's mainly used to mean the former
https://dic.pixiv.net/a/%E3%82%B3%E3%83%9F%E3%83%83%E3%82%B7%E3%83%A7%E3%83%B3