Where did you get this info?
The Weider System of Bodybuilding, promoted through the magazines, eventually became a 1981 book, co-written by the sportswriter Bill Reynolds, and prompted a 1989 sequel, Joe Weider's Ultimate Bodybuilding. In 2003, when the brothers sold their magazine empire to American Media, the price was $357m.
It is not even up for debate, everyone is aware of what weider sold his publications for