A pretty good article from Stylegala.com about choosing the right domain name.

Domains are hot again. After the bubble burst in the 90’s, no one ever thought that anyone would pay a 5 years salary for a domain name again. Think again. iFly.com was recently sold for $65.000. Thats not a wild sum, but it’s not a wild domain either. I did read somewhere that creditcards.com was sold for $2.750.000 last year. Someone did a pretty good investment there. I browsed ebay and found that ss.com was up for bidding, and the tag was around $55.000.

http://www.stylegala.com/articles/choosing_a_good_domain_name.htm