The current price is 1 ETH = $ 294.16. However, when investing you do not necessarily buy at least 1ETH that you can buy 0.1ETH or even 0.01. This is also an advantage of the digital coin, the smallest unit of ETH is 0.00000001 ETH. So, to invest in Ethereum you do not need to have too much money, this depends on the capital you have, the more you play a lot but the less you play.