Unfortunate news - due to low sales of the posters on Shark Robot, they will sadly be removed from that storefront. I will be looking into finding a way to bring them back on another platform, if possible. But, as this will take time and it not a 100% certain thing, your best bet to get these high-quality prints is to jump in the store as soon as possible.
The posters will remain up until the end of the year, at which point they will no longer be available.
https://sharkrobot.com/collections/grindwheel-games