CPO Outlets via Rakuten Shopping offers the refurbished DeWalt 20-volt MAX Cordless Lithium-Ion Drill / Driver Kit, model no. DCD771C2R, for $79.99 with free shipping. Plus, apply coupon code "SPRINGSAVE" at checkout to bag 800 Rakuten Super Points (an $8 credit). Assuming you'll spend the credit, that's $108 off list and the lowest total price we could find. It features two speeds, a 1/2" ratcheting chuck with carbide inserts, and includes two battery packs, a charger, belt hook, and carrying case.
Note that no warranty information is given.