Has Amazon got a tight hold on the comics market?

Hey Guys/Gals

I got good info from my last post I thought I'd try it again! Has Amazon got a tight hold on the comics, graphic novels, books market or is there room to move with selling these items? If so can you give me any suppliers that trade in comics, graphic novels??

Thanks keep up the good work

Here is a supplier that you may be interested in having a look at...
Link hidden: Login to view

All the best :)