People are going bonkers for teddy bear glass cups at Starbucks. The 20-ounce holiday bottled called "Bearista Cold Cups," debuted Thursday and immediately sold out. It is a clear, bear-shaped bottle with a green beanie and a Starbucks logo on its belly. It sells for $29.99, but those looking for one may have to be prepared to spend a lot more. On eBay, they're selling for up to $550. For many, Starbucks' bear cup is a bear necessity. #Starbucks #Bearcup | Inside Edition