Amazon offers the Bosch 2" Phillips Power Bits 5-Pack for $3.99 with free shipping for Prime members. That's tied with our mention from a week ago and the lowest price we could find by $4. They feature an extended torsion zone, silver sleeves, and 10 times the life over standard impact bits.

Update: Note that this item is temporarily out of stock, but can still be ordered at this price for delivery when available.