As reported by
ANN, Bandai Visual gave the domestic home video sales of its main franchises on its website's FAQ section (current as of February 2006):
Mobile Suit Gundam (from Dec. 1987) - 11.9 million copies
Ultraman (from Jan. 1988 ) - 5.78 million copies
Mobile Police Patlabor (from Apr. 1988 ) - 1.7 million copies
Ghost In The Shell (from Apr. 1996) - 1.7 million copies
Cowboy Bebop (from Oct. 1998 ) - 950,000 copies
Frm Gunota