The combined global sales of Baldur's Gate, Baldur's Gate: Tales of the Sword Coast, and Baldur's Gate II surpassed 3.5 million copies by March 2001. Baldur's Gate II alone reached almost 1.5 million sales by December 2002, and more than 2 million by November 2005. According to the NPD Group, the game totaled 480,000 sales ($19.6 million) in the United States by August 2006.
https://en.wikipedia.org/wiki/Baldur%27s_Gate_II:_Shadows_of_Amn#Sales
I really don't want to verify this data.
