The Overstreet Comic Book Price Guide (or Official Overstreet Comic Book Price Guide) is an annually published comic book price guide widely considered the primary authority on the subject of American comic book grading and pricing in the hobby/industry. Many observers tie in the growth of the direct market distribution system and comic book specialty shops to the general acceptance of Overstreet's annual guide as a standardized inventory and pricing system.Begun in 1970 by Robert M.