Amazon offers the Bosch 18-volt Lithium-Ion Cordless Drill Driver / Impact Combo Kit for $134.91 with free shipping. That's the lowest price we could find by $20. It includes a 1/2" drill/driver, 1/4" hex impact driver, an 18-volt charger, two 2.0 Ah slim pack batteries, and a carrying bag.

Note that it's expected to ship in two to five weeks.