As of 2010, Rush has sold over 40 million albums worldwide since 1974.
2, How to Save a Life, and the self-titled The Fray.
I would guess around 75 million worldwide. Am I on target?
Sunburn, Origin of Symmetry, Absolution, Black Holes and Revelations, (HAARP), (Hullabaloo), and The Resistance. So that makes seven (unless you don't want to count HAARP and Hullabaloo then it is...