Thinking in your way, then even just making fan-arts is questionable action, since fan-artists using other people's characters in their works.
If you don't like the fact of paying - actually, any kind of commission work has to be rewarded, and nothing strange when someone paying by asking doing some kind of work exactly for him/her ^_^ For example, when one friend asks other friend to re-draw famous painting is different style and technique just for fun and paying for it, or maybe bying him gifts/food/etc. as gratitude, since he spent a lot of time for this request, there's nothing strange. The same is here.
Hope you will understand~ Have a nice day!
Actually there was someone else on Deviantart that was selling Sailor Moon fanart to the public on the Patreon website and it was extremely expensive too. By the way I am not talking about people paying to have someone paint, or print a Sailor Moon pic, I am addressing those who paint Sailor Moon with the express goal of selling it to everyone which is commercialization. Note I only give friendly advice and truth be told I believe copyright law is too strong as it is, and they seriously need to get with the times aka archaic medieval laws don't work in 2016.
Больше всего тут Серенити нравится.