WHY IS THERE AIR? by BILL COSBY has sold 1,000,000 copies in United States.
WHY IS THERE AIR? certifications and sales
|Country / region||Sales||Certification / source||Certification date / sales as of|
|United States||1,000,000||1x Platinum||30 July, 2001||
Certification / note: 1x Platinum
Certification Date / sales as of: 30 July, 2001
|Total sales||1,000,000||(in 1 country)||
(in 1 country)