I'd pay $30 for the software alone that actually works.

It’s wifi 5 but the most interesting part is it uses 5w of power max, I thought it’d be more.

I didn’t think there was much point in WiFi 6 unless you go 6e and get the 6Ghz frequency?

I don't think they necessarily compete for the same market as some of these other routers. This seems way more compact than many of the other options on the market. I just briefly looked around on Amazon and even many other wifi 5 routers look to be about 2x or thicker than this one. Compared to the GL.inet Opal for example, it's about 20mm smaller in each dimension: 118 x 85 x 30mm (Opal) vs. 95.95 x 65 x 12.5 mm (Unifi). The Unifi is pretty close to a tiny 5000 mAh portable battery.

Now what I'd be really more interested in a Pro version, more so than wifi 6, would be a built-in modem with SIM/eSIM.

Is there really much difference between Wifi 5, 6, 7, especially when travelling given relatively limited speeds you might find yourself in?

I don't even know what is my Wifi "version" at none of the places I have my routers, things just work for all purposes (work, gaming, streaming).