If you are a developer billing that much per hour, then it is undoubtedly worth it. For hobbyist programmers and people just getting started, however, it's a bit more uncertain. It's the age old question of how to price a product that is of great value to professionals, but also useful for novices (think Photoshop and Excel). I think that ST2's approach of being hassleware that doesn't go overboard is a good system.
It's the same editor whether you pay to use it or not. The tiny hassle at the beginning of clicking "OK" is just to remind you to finally pay for it when you move from hobbyist to professional. :)
And if you work in a big company, who knows! They might already have a group license you can you.
