Bitcoin has revolutionized basic Fundamental of Economic Law
Still some Traders are willing to pay as much as 15% premium for their bitcoins.

That spread is unprecedented to fundamentals of economic law. When transaction costs are low, identical items should trade at nearly identical prices.
On January 2014, the price of one bitcoin was back down to about $913 (depending on the exchange), after reaching an all-time high of over $1,200 earlier in December. $4 was the price just two years before then. More and more retailers are adding cryptocurrency as a payment method.
The more we buy the more the price increases.
The good news is: BITCOIN IS UNSTOPPABLE (same like ride sharing, hotel sharing, etc..) SO ARE WE!!