In 1975 when I was an editor for (then) Petersen Publishing Company and heading up their books division---Petersen mainly was magazines--one of our special one time soft cover books for newsstand distribution was cover priced at $4.95. In 1982 that book was purchased by Bonanza Books for hardbound release under their imprint, keeping the same title and cover art for the dust jacket. I don't know how it might have been re-priced. My only file copy is one of the original soft covers and it's showing age and deterioration.
In browsing Amazon today, I found several sources for the Bonanza hardbound version, and ordered the copy that sounded like it was the most pristine of several copies available. With shipping, the book is $21, and a bargain since I'll add it to my permanent library, and my personal history.
Jim Woods
www.ultrasw.com/jwoods