Banyan Imports via Amazon offers the Co-Z 5-Piece Drill Bit Set for $23.99. Coupon code "7LX2GT49" cuts that to $18.95. Plus Prime members qualify for free shipping. That's the lowest price we could find by $10. It's compatible with 1/4", 3/8", 1/2" electric drills or bench drills (It only works for sheet metal, aluminum, or plastic.) Deal ends September 20.