I would think that between Bounce and This Left Feels Right they've sold more than 100 million.

http://www.riaa.com/gp/bestsellers/topartists.asp

Apparently the Backstreet Boys have sold more records in the U.S. than Bon Jovi. I have no opinion on that.

http://www.contactmusic.com/new/home...njovix30x05x03

This was all I could find... "nudging 100 million"... it seems no one has specific numbers. Which makes sense really.