Amazon has BOSCH Fractional Jobber Black Oxide Drill Bit (various sizes) on sale listed below from $0.67. Shipping is free w/ Prime or on $35+ orders.

• Note: Available sizes and shipping times may vary.

Available:

• 13/64-Inch $0.67
• 5/16-Inch $0.67
• 7/32-Inch $0.67
• 15/64-Inch $0.67
• 19/64-Inch $0.67
• 9/32-Inch $0.71

About this item:

• Speed helix design for three times faster drilling than standard bits
• Last 50 percent longer than high-speed steel
• Easier drilling, reduced heat and extended drill bit life
• Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming)
• For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials