I had IPNetRouter & Monitor back in the OS 9 days, and it was amazing how powerful, easy to configure and comprehend it was. To other discounting the "G" part of the UI: Don’t. Being able to easily pull up all your information quickly and easily saves a lot of time and lets you absorb the information faster. I have a Network+ Certification, and having used this before I got my cert. made it a lot easier to get my bearings in networking.
Sure a real CLI pro could script multiple Terminal windows opening up at once, but an inexpensive, flexible GUI facade that is updated regularly and well supported is something many NetAdmins do not realize they need.
If you are a network admin and you save 12 minutes a day (completely possible IMO), at the end of the week you have another hour to do something else, including actually eating lunch out of the office. So, yeah it’s worth $60 considering it will pay for itself in within a month in saved man hours. Even a home user with a complicated setup could benefit for a fraction of the price of professional tools.
Sure it’s not “perfect” and there could be several graphical and feedback improvements, but the price:performance ratio and ROI is pretty awesome. But that’s just my opinion, and your mileage my vary. So, download the demo and try it out. What have you got to lose?