I know someone who bought a very good domain for $45,000 (not quite mint.com, but close) in 2008 and the type-in traffic alone brings millions of unique visitor

I know someone who bought a very good domain for $45,000 (not quite mint.com, but close) in 2008 and the type-in traffic alone brings millions of unique visitors and is enough for him to earn $500-1000 per day in advertising.