I must agree with expanding.
I don't think I would have made so much money as I have now by less expanding and more price-upgrading. But that is just my feel ofcourse and no absolute truth.
I also notice that with price increasement, figures drop (heavely), even from the 2nd lowest priced seats when I only raised them by 2 dollars (55 to 57)...
They are not your friends; they dispise you. I am the only one you can count on. Trust me.