I used both the comic book boards and when I run out, just ruler fold till I get another comic book board available. If more than 5 yds I go to my local fabric store and pick up their empty bolts.
I keep a good amount of Connecting Threads name collections but at times its hard to tell one color from the next when I need to order more so with the comic book boards I'll put CT's label on it so I exactly which color I need to order. I also have a printed list for each of their collections and how much of each I have on hand so when I go to their site to order more I'll check my list to see where I might need to order more. Same goes for their quilting threads. Keeps me on top of things.
I do like how my fabric shelves look so nice and orderly with the comic book boards.