ToolUp via eBay offers the DeWalt Self-Leveling Line Laser, model no. DW087K, for $139 with free shipping. That's the lowest total price we could find by $19, although we saw it for $13 less last Black Friday. This horizontal and vertical line laser features a one-button operation, visibility range of 50 feet, built-in magnetic pivot bracket, flashing indicator, and is accurate to within 1/8" at 30 feet.