If you want a decent bicycle that doesn't way more than you do, you want to head to Gregg's Cycle--with two locations, one in Greenlake and one in Bellevue, you have a good cross-section of bicycles to choose from.
Gregg's staff is happy to consult with you on what kind of bike might be best for your needs, and encourage you to give your possible purchase a spin or two around the parking lot. Mid to late summer is a great time to catch the sales at Gregg's, where you can get a bike for almost half the initial price.
Gregg's also offers more complex repairs, packaging to ship your bike, and a class on bikes to help you feel comfortable with basic repairs and maintenance.
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