http://coinmamailtcrg7fw6uorut3d35bk35rtmntkrtb4fgeov6pefvfutqd.onion/blog/what-is-ethereum-eth-and-how-does-it-work
The coin’s development was sold in an early example of an ICO (before the term was coined), when people were able to buy Ethereum for BTC between July and August of 2014 in a pre-sale. About $18 million was raised by selling 60 million ETH for about 31,000 BTC. The crowd sale established the initial ETH price at roughly $0.30 cents, based on the Bitcoin price at the time.