Looks great! You inspired me to want to do something similar, perhaps in a photo frame on my desk with a to-do list.

I was shocked at the price of the e-ink display though. $200?! I could buy a whole Kindle for that price.

Indeed! And with the help of PascalW's kindle-dash, I did just that with a leftover Kindle.

https://github.com/pascalw/kindle-dash