Hard to believe that the 7DII will be more expensive than the 6D.
As per Canon's nomenclature, the 6D is a more premium model than the 7D.
So, unless Canon's marketing guys are out of wack, the 7DII won't be more expensive.
As I said in a previous post, I'm expecting that the 7DII price will remain the same as the 7D at introduction ($1699).
This is based on the expectation that the 7DII will be a warmed-over 7D but with a better sensor.
I could be wrong, of course, and the 7DII might get a price as high as the 6D.
Certainly not higher (again, unless Canon's marketing department has gone out of control).