Like others, I am just happy to see the show, whether its 30 minutes or 90 minutes or 120 minutes. I definitely prefer shorter, tighter shows to long drawn out epic nonsense, that makes you glad some venues have curfews!
My guess is with this month off that they have, the setlist is being revamped. Remember the leg of the tour that was just finished in Europe was initiated before the new album came out. Now they can add in the potential singles and other songs that have generated buzz. While I don't think the setlist will be brand new, I wouldn't be surprised if there were significant changes.
As for ticket prices, I was genuinely surprised at how low the prices were for two of the three shows I am going to. I think for a band with their caliber of hits $75 for general admission at the Borgata and $55 for the good seats at Mohegan Sun is more than reasonable. The PNC tics were a priced a bit high for an amphitheater, so since it will be my third show I opted for the 400 section. Overall, $180 for three shows is practically unheard of for 80% of the bands touring this summer.