You can try CoinSwitch for exchange
eth to btc trading. As You can buy 100+ crypto currency using credit card and 4000+ coins to trade. That to without creating an account [NO KYC].
You can compare the prices of a trade pair, offered at leading exchanges like Binance, Changelly, ChangeNow, Changer, Swaplabs, KuCoin, Bittrex, HuoBi, HitBtc etc. and trade either with best rates or with any exchange of your choice.