Hello,
There were 3 price categories for the Elevation Tour:
$45 - This was for the GA-tickets (General Admission on the floor) and the so-called nosebleed seats (high in the arena and at the back of the stage)
$85 - These tickets were for Reserved Seating
$130 - This was the so-called Golden Circle, reserved seating in the sections closest to the stage.
On average, the ticket price was $80-$85, depending on the venue (those with a bigger arena floor had generally more people on it, bringing the average price down, while for instance Anaheim had a large Golden Circle section, raising the average).
I don't know exactly how large arena's are in the USA, but I would guess they can hold 16,000 - 20,000 people. With the exeption of one or two concerts on the third leg (Kansas?) all shows were sold out (and those that weren't were close to a sell out).
C ya!
Marty