It looks like someone else linked this Ali Express item @ $1500 elsewhere in the thread: https://www.alibaba.com/product-detail/largest-32-inch-e-ink...

Does this one require a driver board as well?

Yeah, and frustratingly or fortunately (depending on how you look at it) that board has a full Linux/WiFi/Bluetooth stack on it so you don't need/can't use a ESP32/Whatever.

Competition in the space would be great.