Home Depot offers the Bosch 10-Piece Daredevil Spade Bit Set, model no. DSB5010, for $9.97. (Amazon has it for the same with free shipping for Prime members.) Choose in-store pickup to avoid the $5.99 shipping fee. That's tied with our mention from last week and the lowest price we could find now by $16. It includes bit sizes 3/8" to 1.25" and a 6" extension.