I'm under the impression that these days we're used to getting everything for free on the web, and especially so when it comes to things such as WordPress templates, phpBB themes or any other templates and themes. Are people willing to pay for extra high quality templates?
Marco, a blogger and friend, has released a theme called Dark Matter Pro for the Pixelpost photo blogging software. This is a paid version of his free theme, where the free one is apparently good enough that is marked as "featured" on the pixelpost site itself.
I certainly wish him good luck and hope that he succeeds. Having worked hard on it this theme for a while, Marco is obviously pretty serious about it, he has even setup a whole new domain dedicated to the theme as well as an affiliate program.