OK I think I can boast the most variant in automated software that calculates a site's worth.
My Site is worth $0 - $264,000.
Naturally I would go for the upside of that figure but if anyone wants to meet me half way the site is yours.....hehe
Just curious what varaitions other sites are valued at:
amazon.com $40M - $120M
google.com $515M - 3,092M
ebay.com $0 - $66M
Anyway these sites are quite fun and normally give a backlink.