The 30th addition is an overall great condition. Slight way around corners and edges. The 21st edition isn’t used condition heavy wear around corners and edges. See photos.
The Overstreet Comic Book Price Guide Paperback Book by Robert M Overstreet 1992
Overstreet Comic Book Price Guide #30 (2000) EC Horror Cover Robert M Overstreet
The Overstreet Comic Book Price Guide 54th Edition By Robert M Overstreet
Robert Overstreet 1978 Overstreet Comic Book Price Guide No 8 Paperback
The Overstreet Comic Book Price Guide By Robert M. Overstreet (28th Edition, PB)