No idea but the fees are outrageously high
You are buying 1.00000000 BTC
Buy price 706.52 EUR/BTC 706.52 EUR
Payment fee + 38.28 EUR
Well in USD they charge 4.4 %..
Over 5% was taking just for pay fees(EURO)? It means dollar pair was being preferred, just take below 4.5%. but overall it was being so high(fees).