According to redbubble you set your win margin, standard is 20%. But you also have to pay additional fees, where the % is higher on smaller accounts than bigger ones. And there is a payout threshold.Small sellers aren't really pushed by the site either. I made some sales there a few years ago, but it went worse only accounts that sold stolen artworks were promoted and then they added the fees. That's when I deleted my account. Not worth it.
