Bad exchange rate when buying crypto on Binance using EUR

I was looking to buy LUNA on Binance as their fee is 0.1% compared to CDC's 0.4%, but noticed something bad with their EUR prices:

At the same point in time today I had the following prices:

LUNA/EUR: 56.66

LUNA/USDT: 63.88

EUR/USD: 1.13

The real price for LUNA/EUR should be 56.44, a 0.39% difference that combined with their 0.1% fee, makes their final "cost" 0.49%.