Pop/Rock Album Sales and Record Labels

I am looking for album sales figures for the following albums:

Duran Duran - Astronaut
INXS - Switch
Depeche Mode - Playing the Angel
David Bowie - Reality
David Bowie - Heathen
Sting - Sacred Love
Tears for Fears - Everybody Loves a Happy Ending
REM - Around the Sun
Madonna - Confessions on a Dance Floor
Meat Loaf - Bat Out of Hell III
U2 - How to Dismantle an Atomic Bomb
George Michael - Patience

Also, at what point does a recod label say that sales are too low to keep on going?

For total sales up to a point you can try the Gold and Platinum Database Search.

For example, Duran Duran’s Astronaut returns no hits so it never sold as many as 500,000 units.

But How to Dismantle an Atomic Bomb went M3, which appears to mean 3 million sales.

It’s crude but a good approximator