Basic facts, one of my sites gets 8,000 uniques a day, 4 page views a visit and earnings from various sources are (this figure is example only) $300 a day. Earnings figures go back 5 years, regularly increasing year on year to the current figure. Make me an offer for my site and I bet it's less than $200,000. Why less than that? Normal business rules value a standard business at 8 times annual earnings. My site requires no regular updates and the content will remain up to date for years ahead.
What are the rules for valuing a website, where do you go to buy or sell one?