Ok, using pxlpshr suggestion, I just updated the website and screencast with a tip on how to better use Cinch with multiple displays: http://www.irradiatedsoftware.com/cinch/
Some developer blogs might show graphs so you can see the trend of their sales, usually with a line showing where they finally become a viable business, but few release hard numbers. I'm happy to share more hard numbers if anyone asks, since I feel this is very valuable data for anyone considering ISV or the "name your price" model. Feel free to contact me via the site: http://www.irradiatedsoftare.com/contact
I appreciate the advice. There is a clear idealist (developer) vs pragmatist (business person) clash here that I may need to overcome to survive in this business.