If you just want good espresso and don't want to spend money on a good automatic machine... look at the link. If you want to froth milk to make a cappuccino etc, this pot will not do that for you.
http://www.amazon.com/Bialetti-Expre...1936061&sr=8-2
I haven't used this company before, but they show good prices and have a lot of info:
http://www.espressozone.com/bialetti...kers-7857.aspx
You won't find a decent automatic machine for $100 unless you get very lucky. And I mean lucky... knowing someone and buying their used one, taking a chance on Craigslist etc. You won't find a new one for that price.