His net worth was said to be $2 bil., so the $280 mil. he paid for the Dallas Mavericks was chump change!
He is the owner of the 
NBA's Dallas Mavericks, Landmark Theatres, and ... Rather than attending high 
school for his senior year, he enrolled as a... [DOC] [TLE] Dallas Mavericks on the Forbes NBA Team Valuations List [PAR] Team Value calculated January 2016 ... Mark Cuban was laughed at when he 
paid $280 million for the Mavericks and a ... most valuable basketball Franchise 
in the NBA valued at $1.4 billion dollars.