I bought it personally but I would hardly call it expensive. The three year license is like ~67 USD a year for both CRT and FX.
I love it mainly because it’s multi-platform but I wish it had more features. They boast their great integration with VShell but it would be much better if they just had better support for OpenSSH, like being able to push ssh keys to a host.
Not OP but this is how I learned it and how it’s presented in the help file.