EZdeal is at Pump it Up in Wilsonville. They are offering a $3.50 entrance to one open play. Their open play sessions for the summer are $5.00 but all other ones are $7.00 so this is a half price deal. You can buy up to 5 tickets and they do not expire until Feb 6th, 2011.
Here's their website for more info on the different sessions they offer.