Exclusively for Prime members, Amazon offers the Bosch 47-Piece Multi-Size Screwdriver Bit Set for $9.98. Clip the 15% off coupon on the product page to cut that to $8.48. With free shipping, that's the lowest price we could find by $17, excluding the below mention and other Amazon vendors. The set includes insert bits, power bits, magnetic nutsetters, and a finder driver.

Note: This coupon only applies to your first purchase in the "Tools" category. Accounts that have purchased tools previously are ineligible for the discount. However, even if you are ineligible for the coupon and purchase this set at the on-page price of $9.98, that's still a low by $15.

A close price: Lowe's offers it for $9.98 with free shipping for MyLowe's members. (Not a member? It's free to join.)