Walmart offers the Black & Decker 20-Volt Matrix Cordless Drill
, model no. BDCDMT120, for $53.89. Opt for Site-to-Store pickup to dodge the $4.97 shipping fee. (Amazon
has it for Prime members for the same price.) That's the lowest price we could find by $13. It features a Lithium ion battery and charger, ten clutch settings, chuck size of 3/8", and RPM from 0-800.
Update: Amazon offers it for $48.30 with free shipping.