You enter the quantity of ETH you need and it will work out how much it would cost. Alternatively you are able to enter the quantity of fiat you want to commit. The platform will estimate how much ETH you will get. Learn extra about the denomination of Ethereum https://financefeeds.com/bitcoin-holders-flock-to-new-presale-as-analyst-calls-btc-bull-token-the-best-copyright-to-buy/