The Casbah has the following specifics posted regarding the Modest Mouse show at Cox Arena:
Monday May 14: Modest Mouse, Love as Laughter, and guests @ Cox Arena 7pm
All Ages $30 + $3.75 facility fee
General Admission Tickets on sale Sat Mar 24 @ noon at ticketmaster.com, Cox Arena box office, and all ticketmaster outlets
Modest Mouse is playing the night before at the Greek Theater. Tickets for that show are also onsale Saturday, but available tomorrow in pre-sale. The password for pre-sale tickets is "Issaquah". I presume the password would be the same if there's a SD pre-sale, but as far as I've seen, there isn't one.
If you haven't read about Isaac Brock losing it, read this story about how he sliced himself onstage while having a fit.