I tried to look for it. They were commonly sold on Aliexpress for 39.99 (retail price) but seems like they are out of them. I know the factory that makes them, but to get the 15 bucks price point you need to order a lot when they have in stock. If you want a run just for you the minimum quantity is 1000 units; however you get a price reduction at those quantities.

Found it on ebay:

http://www.ebay.com/itm/5-Generation...sAAOSwuTxV7l4g