Book months in advance of be robbed!

Just have to emphasize this fact, you MUST book your ticket months in advance otherwise you will pay 2 or 3 even 5 times more for the same chair on the same train. In other words Eurostar screws you up the ass for deciding last minute you wanna go somewhere, they assume that everyone knows months in advance before they need to travel and are more than happy to shake people down, con them into paying more when they need to go in short notice. Its a scam and people need to wake up.