CPO Outlets via eBay offers the refurbished DeWalt 20-volt MAX 2-Tool Combo Kit, model no. DCK280C2R, for $134.99 with free shipping. That's $25 below last month's refurb mention and the lowest total price we've seen. (It's $55 below the best price we could find for a refurb today.) It features a 1/4" impact driver and a 1/2" drill/driver.
A 1-year warranty applies, although it's unclear who backs it.