The project uses tri-color e-ink display. You can downgrade to two colors (and use e.g. dithering to get shades of gray) and get almost the same functionality for less money.
This project is really cool, but I would prefer to have "a new picture every morning" in a frame than a calendar. For my purposes the e-ink displays are still a bit too small....
Huh, I see non tri-color version is still available in my country (Poland): https://kamami.pl/en/displays-for-raspberry-pi/577635-1248in... but forget the "less money" part...
This project is really cool, but I would prefer to have "a new picture every morning" in a frame than a calendar. For my purposes the e-ink displays are still a bit too small....