There's Visionect's 32" e-ink display ($3599 for the dev kit or $4699 if you want the color version): https://www.visionect.com/product/development-kit-with-gra

There's Visionect's 32" e-ink display ($3599 for the dev kit or $4699 if you want the color version): https://www.visionect.com/product/development-kit-with-grayscale-32-e-ink-display/24 https://www.visionect.com/product/development-kit-with-grays... There isn't any technological limitation as far as I know; it's just that e-ink displays are hideously expensive to make.