As of 12 August 2019, my Redbubble Shop margins changed.
I'll now get a 75% split of profits from Stickers, and a 25% split of profits from all other merch types.
This means a slight price increase, but also helps to support me more. My DeviantArt Prints split remains at 20%.
Previously, from April 2017 to 11 August 2019, for all merch types, I received a 20% cut of money from each item sold on my Redbubble Shop.