Walgreens offers 20% off Contact Lens Orders through 7/17. Some orders qualify for rebates, like the Acuvue Oasys Lenses. They normally cost $27.99/box, but use code VISION20 to drop to $22.39/box. If you order 4 boxes for each eye (a 1-year supply) you qualify for a $75 rebate. That brings the price to $13.01/box. This deal drops most prices below those of Coastal Contacts or 1-800-Contacts. Shipping is free and sales tax is added in some states.