Walgreens.com takes 20% off all contact lens orders with the code CONTACTLENS20. Plus, get free shipping on all orders. Even better, many brands will qualify for rebates, which can save up to $70! Check out the bestselling Acuvue Oasys Lenses, normally $27.99 per pack, now $22.39 with the code. Better yet, order a one-year supply (8 boxes, 4 for each eye), and get a $50 rebate to drop the price to $17.39 per box (rebates vary by brand name and order amount). Sales tax is added in some states.