As one of its daily deals, Woot Tools offers the Johnson Quad-Line Self-Leveling Cross-Line Laser Generator
, model no. 40-6662, for $349.99
for shipping. That's tied with our April mention and the lowest total price we could find by $140. (Most places charge $550 or more). It features a a laser wavelength of 635nm +/-10nm, visual and audible alarms, manual mode, 5mW power output and runs for up to eight hours. Deal ends today.