If you wear contact lens I think this is a pretty good deal.  Visit Walgreen's Contact Lens Shop and enter code CONTACTLENS20 to receive 20% off and free shipping.  This deal 12/31/11.  Here are a few other great points about purchasing with Walgreens:

not alone.  Here are some quick facts regarding our contact lenses that you may find interesting:
  • Free standard shipping on ALL purchases (no minimum purchase required). Overnight shipping available for $19.95.
  • Manufacturer's rebates of up to $100 on select Acuvue/Air Optix products!
  • FULL catalog of contact lenses (Special lenses, Torics, Multi-Focal, Colored etc) and also Pediatric Lenses (aphakic).
  • All lenses are FSA eligible.
  • DAILY promotions available all year.
  • Easy reorder process (only 3 steps after logging in).