Ends 9/15 at 10PM PT. Tools.woot! has the Johnson 40-6662 Quad-Line Self-Leveling Cross-Line Generator with Plumb Beam for $350 + $5 shipping = $355 shipped. Sells for $500 and up elsewhere. Features a laser wavelength of 635nm +/-10nm, 5mW power output and Ni-MH rechargeable battery for 8 hours of continuous use.