I love e-ink and these look really cool, but yeah, that price. Where are you currently getting your displays? You may be interested in EPDiy [0] (controlling cheap left over Kindle DX screens with an ESP32) and Inkplate [1] for some inspiration on cheaper sourcing.

For reference: the 6" Inkplate costs around 100€ and I think you could fairly comfortably build a 10" EPDiy device at around that. That's without all the fanciness of course, with it I reckon it should be possible to sell these things at around 200€ each, which would probably make them a lot more interesting to people.

That said: I'm excited for color e-ink screens appearing on the market. The amount of devices released lets me hope at least some will make it to a secondary market.

[0]: https://hackaday.io/project/168193-epdiy-976-e-paper-control... [1]: https://inkplate.io/