Worst experience ever! Would never recommend.
I booked a flight through the Opodo website. However, once I received the email confirmation, there was an additional NEVER MENTIONED OR ADVERTISED 78,10 "Opodo charge". This charge is neither advertised to the customer, nor explicitly approved when the payment is made. Thus, this is an illegal charge. There is no customer consent, the customer is not informed until the receipt comes.
Then, the only "solution" offered for this abuse is the "Prime discounts" you "earn", and a voucher for practically the same amount you are being charged for.