Lowes offers Bosch 50-ft Red Self-Leveling 3-plane Laser Level for $69 (reg. $169) free shipping.

Product Description:
The Bosch GLL3-15 self-leveling three-line laser can help with alignment, levelingand squaring needs. Bright laser lines can be used in self-leveling modeor locked in manual mode for sloped applications. The unit features anaudio alarm to alert that the tool is out of range in self-leveling modeso you can build with confidence. The GLL 3-15 is versatile to usethanks to the BM3 positioning device. This included device allows theuser to position the tool on any flat surface, attach it to metalsurfaces or clamp it in place for ceiling grid applications.