There is also $49 version: PocketCHIP https://getchip.com/pages/pocketchip
Shipping in June.
Is it possible to install OpenBSD on it? Just curious.
No, arm7 support is still experimental, but with a bit of effort
you can port it to that platform, using developed arm7 tree.
Thank you for the hint!
https://www.openbsd.org/armv7.html#hardware Looks like it is supported now (A1x is there, and CHIP has A13).