Refresh rate: ~750 ms for 4 bit and up to ~125 ms for 1 bit

Videos of device in action: https://www.visionect.com/blog/kindle-users-can-your-reader-... (our previous generation device)

High prices are driven due to price of screens and the amount of support we provide. It's a development kit, intended for customers building products. We're not that much of DIY (like a hacked Kindle or the OPs solution), but rather a production ready solution that you can use to prototype and later deploy in field. Examples [1], [2], [3]:

[1]: https://www.visionect.com/blog/joan-honored-for-its-eco-desi... [2]: https://www.visionect.com/blog/smart-shelf-labels-on-electro... [3]: https://www.visionect.com/blog/electronic-paper-at-london-bu...