As of January 25, 2014, Cisco had repurchased and retired 4.1 billion shares of Cisco common stock at an average price of $20.53 per share for an aggregate purchase price of approximately $84.9 billion since the inception of the stock repurchase program.
A RealAge answered. You can expect to pay anywhere from $10 to $40 for a tray-based teeth whitening kit purchased over the counter (OTC) from a pharmacy or other retail store. You can also purchase tray-based teeth whitening systems from dentists. These systems feature custom-fit tooth trays or mouthpieces, which is why they are significantly more expensive than OTC tray-based teeth whitening kits. Purchasing a tray-based teeth whitening system from your dentist may cost up to $500.
One thing to remember when considering the cost, is that Zoom whitening usually keeps your teeth white for a year when the take home kit is used for touchups. With that in mind the cost figures out to about $1.36 per day if you pay the average price of $500. However, teeth whitening is usually not covered by insurance.