I bought this on sale years ago, and I really do adore it. The narrow-but-tall design means it optimizes for number of characters per line at the expense of fewer lines displayed at once, which IMO is a fine tradeoff since our tools tend to handle vertical overflow (via scrolling) better than horizontal overflow (via wrapping). That said, I'm sure you can find a free font with similar metrics.

I will also say that I've had a great experience with the developer of the font. I once noticed a bug in one of the glyphs, and within a week of reporting it he had acknowledged it, fixed it, and pushed a new release.