Lowe's offers the DeWalt 18-Piece Magnetic Drive Guide Set for $5.98. Plus, MyLowe's members bag free shipping. (Not a member? It's free to sign up.) That's the lowest price we could find by $6, although we saw this for a buck less last July. This set includes a self-retracting guide sleeve.
If you work in any of these professions, look out: Your livelihood may be in danger.