Alton: Could I make an appointment to see ? erectile dysfunction online pump surgical Cuban, 55, estimated by Forbes magazine to have a net worth of $2.5 billion, is accused by the U.S. Securities and Exchange Commission of trading on non-public information when he sold his 600,000 shares - worth $7.9 million - and avoided a $750,000 loss in Internet search company Mamma.com Inc in June 2004.