It is on the 21st. I have my receipt for that date. I could not go on the 14th.
They will have less expensive tickets for the benefit show. They just won't be in the first 10 rows. You will still be able to get pretty good seats. The chance of getting rows 1-10 at any of the shows is slim to none. There is always Ebay
but I would rather give the $$ to a benefit cause.