Unpredictable ( shipped 1x) but it didn't sell 1 million (there's copies left over)
Tru 2 da Game (shipped 2x) but it didn't sell 2 million (There's copies left over)
I'm bout (shipped 500k, I think) but it didn't sell 500k
Unlady Like (shipped 500k according to some) but didn't sell 500k
How do you know those albums sold what it shipped in 97??
There's copies left over, P AND the artists have to eat that cost, which
Actual numbers taken from Soundscan are posted in this thread for some of these albums.
The label (Priority) eats those costs because they were the distributors. So P ended up owing them because it cost them. Their 15-20% came from being distributors which was making sure albums were on shelves.