They are pricier, but there are lots of Brooks B17 saddles on Ebay for $90 like
this one.
A great investment that will last a very long time with minimal care. Outside of that, like others have said, just find something that's very firm with little padding. New stuff is pricey, but it doesn't have to be. I've gotten a great seat from the Boise Bicycle Project for $10 that was an old ('90s) racing seat. Try and find something used for $5-20 and then eventually just get it taken care of for the next decade or two and grab a brooks. I bet you could find a good used saddle here:
http://www.northportlandbikeworks.org/
http://www.citybikes.coop/
You're in Portland, I bet theres lots more places for used parts too.
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