Kraken has BTC at $1186.54 USD at the same time Bitstamp is $1170.88 USD. ????

[aardvark15]

There's going to be some minor variation in Bitcoin price between exchanges because there are different customers at each exchange. Even within an exchange different customers have different prices at which they will buy or sell Bitcoins. The customer sets the price.

[topesis]

The price variation in  Bitcoin price is a common thing in the space, it is not a supermarket product where the price is fixed, this depends on the buying power and selling power on each exchanges.

[Wayan_Pedjeng]

The price variation in  Bitcoin price is a common thing in the space, it is not a supermarket product where the price is fixed, this depends on the buying power and selling power on each exchanges.

The confirmation also takes a lot of time. So even if we move funds from one exchange to another, the balance is not going to get updated for 1-2 hours. This is having an impact on the exchange rates.