Ski Chalet is an awesome shop on Beaverton-Hillsdale Hwy. They have a ton of gear, including a pretty broad range of twintips.
There is US Outdoor Store downtown Portland. I haven't been there in a while, but they have a lot of good stuff usually.
GI Joes carries a cheaper end of stuff, but I would not count them out. Occasionally, they will have K2 and Rossi skis on a good deal.
REI has some sick stuff as well as far as gloves, goggles, jackets, pants, helmets and such go. I don't remember seeing much in the way of skis, but I could be wrong.
There is a Helly Hansen outlet a little ways away in Woodburn. There is also a Columbia outlet somewhere, but I can't think of the location right now.
The store at Mt Hood Meadows carries a ton of sick stuff. It's a bit more expensive, but there are always sales nearing the end of the season.
You missed it already, but every year around the end of October, Portland has a ski show where you can get some pretty good deals on skis and other gear.
If you have any other questions, send me a message and I'll try and answer them.
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