I would like to point out that I do visit all three comics' stores in city of Melbourne. All three stores would get five stars from me for customer service.
As for the prices of new, back issues and hard cover comics in all stores is not that much in difference.

What l love about Comics R Us is the amazing staff. They are friendly and character, personality and l have never seen any of them pass judgment on any of their customers.
The boys remind me of the comic geek version of Hamish and Andy (Fox FM radio station).

The small upstairs shop allows the staff to get to know their costumes and give a five star service. No matter who walks up those stairs, the customer will be treated as if they are number one person in the comic book world.
I do buy my comics from Comics R Us because l am very happy with their prices and awesome services.