For a small gaming box it is a good price.
If you don’t care that much about size, HDMI-CEC or SteamOS there are faster alternatives for the price.
Especially since, afaik, you plug it in and it just works. No messing around with installing operating systems, setting up users (aside from signing into steam) or anything. It's essentially a console that plays PC games, but it's also a PC for the purposes of upgradability and ability to do other, non-console stuff with it
If you do care about SteamOS, any machine with a reasonably recent AMD GPU will run SteamOS or a similar distro just fine.