Hotmail's is also $20 I think. However, I own a domain name and I pay for hosting all for $100 a year. My host recently added webmail for nothing extra.

I consider this a far greater value than these Hotmail and Yahoo services because you have all the control, and you can add a number of addresses (my girlfriend has one at my domain as well).

Hotmail, I know for sure, is not worth it.