Murray Briggs & Stratton Pressure Washer 3.2GPM 3300PSI $449 free ship at acmetools.com
List price is $699 so looks like a good deal at $449 with free shipping and no tax for a medium-duty pressure washer. Couldn't find much about it elsewhere, but seems comparable to the B&S Elite Series which seem to run from $750-$900 elsewhere.
3300 PSI at 3.2 gpm
Large 3-gallon fuel tank for a 7-hour run time at 50-percent load
1150 Series OHV 250cc engine produces 11.50-foot-pounds of gross torque to power through your weekend project
(2) 1-gallon on-board detergent tank for easy detergent storage and quick project startup