Dear All:
I want to understand why various exchanges currently have a large difference in the ETH/USD rate.
For instance, Poloniex is # $366.00 for ETH/USDT
Gemini @ $384.32 ETH/USD
GDAX @ $394.00 ETH/USD
Any help would be great. And if anyone reccomends one exchange over the other, especially for a NEW YORK state resident
Thanks!
They have different supply and demand that makes the price is different in every exchange site. But you can try to buy ether through coinbased or shapeshift. Try to compare all of the exchange and take the best one.