Volumes #1 to #13. Hardcovers. Bought to read as I was curious how the tv show differed from the comics. Read once then put on shelf. Making room for on my shelves for other things. Each book collects 12 issues of the comic. Many have extra short stories and/or artist renditions and brainstorming/design sketches, artwork of original comic cover issues and variant covers. If you are a fan, or know a fan Xmas is coming up, or are like me and were curious about the differences this is a great buy. These retail for between $42 and $55 Canadian each depending on where you find them. If you can. At $300 for the compete set, that's only $23 each. As mentioned, read once and shelved. They are in new condition. I have no issue selling to resellers on the auction sites. I simply don't the time to do so myself. Open to reasonable offers but no low ballers.