Neonmob can take 70% of the money because they have no competition. I have not found any other website where you can collect cards that are not some sort of TCG like Pokemon or YuGiOh or Magic: The Gathering, but individual sets from different authors. DeviantART doesn't count, because they don't sell digital art. They only sell the art physically, which has a low royalty percentage, because it costs money to make.
I wish Neonmob would split the profits like Apple or Steam: 30% to the company en 70% to the user. After all, the company makes a website with hundreds of apps/games/cards and gets 30% for every single product. That's a lot of money. The creators do most of the work, so they should get most of the profits.
I would honestly start a website like Neonmob if it wasn't for the fact that no-one joins if there are no series and no creators will join if there are no users, which is a Catch-22. It would be way too much work for a small chance of success.
Another website that takes a very large amount of the profits is Envato. You get 36% if you're non-exclusive and 50-70% if you're exclusive. So they used a system like Neonmob did before where you earn more if your products are exclusive to that website. You would only get 70% if you earned $75.000 or more though. It's a sliding scale between 50 and 70% depending on your earnings. Envato has an alternative called Sellfy, which takes only 5%, which is a HUGE difference. For $15 per month, you pay only 2%, which is insanely low! If you earn $500 per month, it's best to pay $15 per month.
I don't suggest that Neonmob should take only 5%, which is really low, but 30% is fair. 50% is already really pushing it, but 70% is just way too much! After all, the authors do most of the work drawing the art. The hours that all authors combined have worked on their art for Neonmob is WAY more than Neonmob worked on their website, because there are just so many authors and series on Neonmob. The authors earn barely anything, because afterwards, they need to pay taxes on that 30% that they earn. The average author doesn't earn that much money, but Neonmob earns money on all packs bought of all pro series and per pack they earn more than double (2,33 times) that what an author earns!
Neonmob states that you "Earn the highest royalty rates of any art marketplace offline or online." I don't know any art marketplaces, so it would be nice if someone could give me examples different royalty rates.
Neonmob, please flip your royalty rate, so authors get 70% instead of 30%. It's more fair for authors and you'll still earn plenty of money, because the large amount of series.