In reply to todd:
You can rent plastic boots, crampons and ice axes at REI in Seattle. It should cost less than $200. Probably more like $100.
When I was on Rainier a few years ago there were quite few posers w/ $700 goretex outfits. None of them summitted. I had a cheap $25 rain outfit from KMart. I summitted.
My point is you can comfortably outfit yourself for less than $500, and the high tech gear isn't going to make that much difference.