15 Year Professional Artist With Questions

I hope this is the correct forum for this inquiry. If not, I apologize in advance. I'm a professional artist and I this site was brought to my attention. I know Roll20 has an assets store for artists to post items and things for players to use. My question is does anyone know what kind of turn around on average the asset artwork has? I'm interested in painting up some professional level work but if there's not much demand I'm not going to bother. I just thought it would be a nice way to make some money on the side. I'm not here looking to make a massive fortune, but at the same time I don't want to waste my time making good quality art if no one is going to buy it. Again, I hope this is the correct forum. Apologies if it's not, just looking to see if I can gleam some kind of rough metric. 

I would recommend you emailing the devs at <a href="mailto:Team@roll20.net" rel="nofollow">Team@roll20.net</a> with this request.

Looking at sales data, we've found most creators have low sales until the point they have three packs of content (each pack being around two dozen tokens or so). Three is enough that content-buyers seem to feel there's an opportunity to play several games using a given art style, in addition to the increased chance of your work being found due to more search results via tagging. That is to say, we believe that the majority of creators need to put in a large upfront investment in order to see returns. If that's not of interest, we might not be the right venue for you!