After a long streak of raising their prices ruthlessly, Thalys has decided to release a limited number of 2nd class tickets at a more reasonable price: EUR 22 each way Brussels-Paris.
The catch: you have to book them waaaay in advance: 82 days. Bookings start now for 14 July and a few days later. There are of course limited tickets for this offer which they call “FIRST MINUTES”, so be fast.
All the details and online booking are here.