how do i look up comic book prices?

You can purchase this book:

The Official Overstreet Comic Book Price Guide (Official Overstreet Comic Book Price Guide)
by Robert M. Overstreet
-You can find it at amazon.com or barnes & noble stores or website (www.bn.com)

Here's some links:
http://comicbooks.about.com/library/blprices.htm?PM=ss12_comicbooks

http://www.lyriacomicexchange.com/

There are some stores that sell and buy them too. I think if you look up 'comic books' in the Yellow Pages you might find something. But that book might be best because if you go to a store they might try to screw you over by telling you something costs less then what it is and then try to buy it from you. The book will probably give you the true price.

Mary