That's kind of sad. I'd pay $12+ or more depending on how useful it would be for a FF extension. Especially in case you'd get some support and regular upgrades.

That's kind of sad. I'd pay $12+ or more depending on how useful it would be for a FF extension. Especially in case you'd get some support and regular upgrades. 12$ is not much for you but for the programmer it can make a stable income once the add on gets popular.