Page is a not externally linkable
MovingOnUp - 12:54 pm on Jul 6, 2005 (gmt 0)
If the site has unique content, growing traffic, returning visitors, is continually getting unsolicited links, and has potential to expand beyond AdSense, up to 24x monthly income might be appropriate.
For a site with AdSense and the only or primary source of income, I would be hesitant to pay more than 6x monthly income.