Amazon offers the 3M Headlight Lens Restoration System, model no. 39008, for $6.47 with free shipping via the directions below. That's the lowest total price we could find by $10, although we saw it for $3 less in April. This automotive headlight kit purports to remove scratches and restore cloudy, dull lenses. Rebate ends December 31. To get this deal:
  1. View the 3M Headlight Lens Restoration System for $13.49
  2. Add to your cart via Subscribe & Save to cut it to $11.47
  3. Redeem this $5 mail-in rebate for the final price of $6.47
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.