VMInnovations via eBay offers the Briggs & Stratton 1,800 PSI Electric Pressure Washer, model no. 20600, for $179 with free shipping. That's the lowest total price we could find by $4. It produces 1.3 GPM, features an on-board tank, two spray nozzles, and 26-foot hose.
Update: Better yet, purchase directly from VMInnovations and apply coupon code "SAVE2" to get it for $175.42 with free shipping.