Detour, mess and money waste
As I had difficulty finding the Greek national train operator on the net, I ended up with ordering here. I only got my ticket three weeks later and after two emails to them - and I had paid 86USD to them when reserving while normal price is 53€, around 50% more. - In Greece use trainose.gr instead, the operator, in other countries also be sure to find it. -Since they in fact refunded a payment in a different case because of unavailability and their customer service responded me, I feel obliged to give them two stars. But avoid them. - Trustpilot should take a look at the statistical pattern of stars in the reviews - it certainly looks suspicious