I just watched their YouTube video [1]

There are a tonne of alternatives for those interested in retro-gaming devices.

There is also a sub-reddit for these discussions (r/sbcgaming) [2]

Devices made by Anbernic and Miyoo are good. There is also the new Gamekiddy Pixel. These existing devices are usually available at around $50-85 and are much cheaper than ModRetro’s $199 price point.

[1] - https://youtu.be/QmA20GTr8XI

[2] - https://reddit.com/r/sbcgaming