Amazon offers Prime members the Bosch 47-Piece Screwdriver Bit Set for $9.98 with free shipping. (Lowe's charges the same.) That's the lowest price we could find by $9. It includes insert bits, power bits, magnetic nutsetters, and a finder driver. Deal ends July 5.
Home Depot offers the Bosch Daredevil 14-Piece Spade Bit Set with Pouch for $14.88. Opt for in-store pickup to dodge the $5.99 shipping charge. That's tied with last week's mention and the lowest price we could find by $6. It includes bits ranging from 1/4" to 1-1/2".