As a former seller on Redbubble I found Redbubble to discriminate against artists that post authentic and diverse bodies of work with claims of infringement with vague reasoning. Redbubble repeated removed comic style illustrations and manipulated photos of celebrities that I designed in Photoshop and Illustrator stating Bravado International Group copy rights/ licensing to the photos I used, but when I contacted the VP of legal services with Bravado he stated they (Bravado) did not have licensing for the photos used in my designs. When I presented evidence that my designs were not infringed Redbubble closed my sellers account.
It's no coincidence that the designs that were removed by Redbubble were generating revenue, and if you have read reviews from Redbubble sellers on this site or any other review website you'll find a trend that once they make over $100 in sells Redbubble will use Bravado as a scapegoat to remove the design(s) that is selling!
I recommend using teepublic.com, society6.com and or threadless.com but avoid redbubble at all costs!