I've used one of the Lilygo Eink boards (this one I think: https://www.aliexpress.com/item/32869729970.html). Their documentation (https://github.com/lewisxhe/TTGO-EPaper-Series) is marginally better than most Aliexpress sellers (still not great, and blatantly wrong for some things like the width of the JST battery connector).

There is a little driver funkiness with some of the boards and I've actually experienced something that looks similar to burn-in on mine, but the price is right and the form factor is great as long as the 2-3 inch screens are big enough for you.