Small feature request - a how-to manual

My thought is via Amazon Kindle - and for pay!
I just bought a THIN book on regular expressions for $34 ... what could you charge for a Hazel manual and text?
I'D buy!
(I prefer paper, but Kindle would likely do)
One issue: after I've renamed & moved and brought up Preview, I can't seem to get out of the Hazel dialog box gracefully, since the file IT is still 'looking at' no longer exists (moved). Would be nice if I could have exited the dialog after Preview loads the renamed file!
Also, when do I get to pay MORE for Hazel? There've been quite a few upgrades since I purchased... ??
I just bought a THIN book on regular expressions for $34 ... what could you charge for a Hazel manual and text?
I'D buy!
(I prefer paper, but Kindle would likely do)
One issue: after I've renamed & moved and brought up Preview, I can't seem to get out of the Hazel dialog box gracefully, since the file IT is still 'looking at' no longer exists (moved). Would be nice if I could have exited the dialog after Preview loads the renamed file!
Also, when do I get to pay MORE for Hazel? There've been quite a few upgrades since I purchased... ??