dood-
you might get yourself down to northwest outdoor center on lake union. they have a bulletin board up where people post kayaks for sale.
also, although i don’t know if kayaks are for sale, you might consider going down to Tacoma on May 16th or 17th for the Puget Sound Sea Kayak Symposium.
http://www.metroparkstacoma.org/page.php?id=97
there are classes and tons of demos. this was really valuable to me in learning how to fit myself with a kayak and then getting to try out a bunch in the salt water so that i was comfortable with one i ended up getting.