I have lived in Milwaukee, almost my whole life, and have been listening to prog for about 7 months now. I cannot buy cd's on the internet, because I do not have, nor want a credit card. As a result I have had to order the majority of my cd's from cd stores, and wait a week to get the cd. That is until I found Rushmore Records.
This shop is great, they have a whole section of Prog. They have everything you could want, from Le Orme, to Van Der Graff Generator, and everything in between. On top of their great in store selection, Dan the guy that works their can get you a great price on any rare CD.
I was trying to get Anglagard's Hybris, and could not find it anywhere, and where I could find it, the price was upwards of 100 dollars. Dan had a friend in Sweeden, that knew on of the band members, and was able to get it for me for 35 dollars.
If you live in the milwaukee area check out the store it is located on Kininick avenue(sorry about the spelling im sure its wrong.) in Bay View.