The Overstreet Guide to Grading Comics is a must-have book for comic collectors and dealers, featuring comprehensive coverage on all aspects of comic book grading. Previous editions of the book have been strong sellers for Gemstone Publishing’s Overstreet line and thrive on the secondary market with regular eBay sales of $90 – $130. Now The Overstreet Guide to Grading Comics – Seventh Edition is on its way, and it is joined by a special edition.

For the first time ever, The Overstreet Guide to Grading Comics is being offered in the oversized Big, Big format. The Big, Big Guide to Grading Comics will be the same 9” x 10-3/4” size of the popular Big, Big Overstreet Comic Book Price Guide – except this exclusive version will be available in full color format. The limited edition book is now open for sales exclusively on Zoop.

The book opens with lively, comic-style introductory material, and features the material fans, collectors, dealers, and comics historians have come to trust over decades. It defines the 10-point grading system with exhaustive descriptions of primary and split grades. There are over 200 full-color image examples and profiles on third party grading companies. Detailed information on storage, preservation, restoration, the evolution of grading, and more are also presented in the book.

The need for accurate comic book grading has become increasingly more important as the value of key comics has risen significantly. The same issue can sell for dramatically different prices depending on the grade, and third party grading plays a major part in the value of books in the secondary market.

Collectors need to have a clear understanding of grading when submitting to third party graders. This helps people have realistic expectations about the grades that their books receive. The Grading Guide provides meticulous descriptions and illustrations of the grades, including the small details that can reflect a point or half-point difference. When collectors and dealers familiarize themselves with the differences in grades, it helps make the transactions of raw, unslabbed books as accurate and realistic as possible. Knowing more about third party graders, learning tips for storage and preservation, as well as restoration, and understanding the history of comic grading provides a strong knowledge base for all members of the comic collecting hobby.

The Big, Big Overstreet Guide to Grading Comics is priced at $75 and will be limited to orders placed on Zoop by July 17, 2026. Overstreet fans can also order the regular Overstreet Guide to Grading Comics – Seventh Edition in softcover or hardcover on Zoop. Additional items include The Overstreet Comic Book Price Guide #55, The Big, Big Overstreet Comic Book Price Guide #55, an Overstreet Access gold level one year membership, and a retailer pack is also available.