If you happen to be in the Orlando area or will be attending the NCPA Open at Disney's Wide World of Sports Complex on April 18th, you will be able to get PSP ID Cards there for the online price of $20.
1st Place Rookie and 1st Place Novice also receive a free PSP 5-man entry. Rookie is $200/team and Novice is $600/team if paid by Wednesday, and there's CASH prizes for both divisions as well.
Don't forget college and HS teams also play their National Championships on April 17th for $100/team
More info at www.college-paintball.com/nationals