For the GAMMAGE Auditorium, the per-ticket purchasing fees can be very high, but if you go to the venue you can lower those fees. Here are the prices:
1) For window walk up sales, there is a $3.00 per ticket service charge assessed and an additional $4.50 Facility Use Fee (for a total of $7.50 per ticket
2) For the ASU Gammage Telephone Room or for online purchases there is an $8.00 charge plus a $4.50 Facility Use Fee (for a total of $12.50) on each ticket sold whose face value is $22.51 and above or for tickets $22.50 and below the Telephone or Online charge will be $3.00 plus the $4.50 Facility Use Fee (for a total of $7.50) for each ticket sold.
Note that there may be additional credit card fees.