It is no longer a secret that you can buy many goods online for less than you would pay in traditional shops. Contact lenses are no exception - in fact, you can save anywhere from 50 to 70 percent by ordering your contacts online. So where is the catch? Why online shops sell discounted contact lenses? First, internet businesses don't have as many expenses as eye care practitioners - they don't have to pay rent or hire staff. Second, large online contact lens retailers sell thousands of.