Lowe's offers the Kobalt Laser Distance Measurer for $19.98 with free shipping for My Lowe's members. (Not a member? It's free to sign up.) That's $20 off list and the lowest price we could find. It measures distances up to 50 feet and features an inverted display with backlight in SAE or metric. Two AAA batteries are required but not included.

Update: It's now available for in-store pickup only.