Home Depot offers the Bosch Daredevil 13-Piece Spade Drill Bit Set, model no. DSB5013P, for $16. Opt for ship-to-store pickup to dodge the $5.99 shipping fee. That's tied with our April mention and the lowest price we could find by $12. It includes 13 spade bits from 1/4" to 1-1/2".