Amazon has select Bosch Drill Bits on sale. Shipping is free with Prime or $25+ orders. Also I see a promo: save 10% off the purchase of four (YMMV). BOSCH TI2133IM 3/32-Inch Impact Tough Titanium Drill Bit $0.79 >In stock soon, may order BOSCH CO2135 1/8 In. x 2-3/4 In. Cobalt Drill Bit $1.71 BOSCH CO2137 5/32 In. x 3-1/8 In. Cobalt Drill Bit $1.99 BOSCH CO2139 3/16 In. x 3-1/2 In. Cobalt Drill Bit $1.99 BOSCH CO2141B 7/32 In. x 3-3/4 In. Cobalt M42 Drill Bit $1.99 and More