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
As an aside, does anyone know of an agregator of blog posts concerning sales data for ISV's?