[lottin]

You're conveniently forgetting the fees and other transaction costs associated with purchasing the Ether and then selling it for fiat.

[Tenoke]

The fees for buying and selling it are on the order of 0.075-0.5% with most exchanges.

[lottin]

And the wire transfers between the bank accounts and the exchange?

[Tenoke]

Those are free for most people - in Europe via SWIFT and in the US via an ACH transfer.