I would first say that if you are in-town and looking to catch up on last month's issue or a graphic novel, come here. If you are coming back from a one-year hiatus from comic books and you would like to get back into it, go to their website and order there. This is probably one of the best places to order comics. If you move away, you can still have your membership and have them ship your comics to your new address.
My big criticism is that this is a satellite store for the big G-mart in Chicago so any back-issues you order, are shipped to this location. My favorite comic book stores usually have some kind of back-issue collection.
I think the service that they provide online is extraordinary but I think the C-U store itself is a little disappointing. They got some figurines, a number of graphic novels, the latest month's comics, and a table of potpourri boxes. However, I will count my blessings and be glad that I can interact with a person when I get my comic books and be tempted to buy a comic figurines too.