There are various SDR-based QRP rigs on the market, but yeah, the Hermes Lite 2 is definitely a popular enthusiast-class network radio. Main PCB, filter board, I/O board, and enclosure for ~$400.
Is the Hermes fairly straightforward to get going? I have a LimeSDR that I got during the COVID and didn't do much of anything with it. It just seemed to be too complicated and too much of a pain. I write code, build rigs from scratch, make 2N2222s do things they probably shouldn't, and run Linux / BSD / etc. so I'm no dummy. (I should probably revisit the LimeSDR and try to do something simple with it.)
Mine wasn't too hard. Build the kit (very easy, just putting two boards together and adding some thermal paste) and then I connected mine directly to the computer (rather than through a network). Thetis has a long initial bootup that confused me because I couldn't find any info about that. Once it was complete it was pretty much working, although the software stills needs some tweaks to get transmit to work, and a few other things for ideal operation.