If you aren't SSHing to boxes from a mobile device often enough that $20 doesn't seem worth it, then this likely isn't for you.
I for one would pay that at the drop of a hat if I only had a cell phone and my servers were down. It's certainly not much for an everyday productivity tool.
> ... if I only had a cell phone and my servers were down.
I just use my cellphone as a hotspot, my MBP connects to it, and I'm online. Several of my co-workers do the same thing. Is that uncommon? I kinda just assumed that's what most people do (assuming they have a laptop with them, of course).
There's also just the scenario that I don't have my laptop but could really use an SSH terminal and CLI environment at the moment.
I guess with this price it's not for the casual user. You can compile it yourself (see their Github page) or ask on Twitter to be added to the testers list, so that you receive the raw builds without having to compile them yourself.