The Orange Pi, an alternative to the Raspberry Pi, has received a RAM upgrade this week. There are four new versions of the single-board computer, which start at US$29.90 plus shipping.
https://www.notebookcheck.net/Orange-Pi-3-H6-An-updated-version-of-the-Raspberry-Pi-competitor-that-starts-at-US-29-90.396791.0.html