Hi Istvan ! Nice to have you in Cergy !
Got players usually gather at "Troll 2 Jeux" on tuesday afternoon and evening. You'll be able to buy your chapters there. The exact address is:
22 Rue Hector Malot
75012 Paris
You can also buy card by card on a dedicated website managed by Ser_racoon:
http://mrracoon.fr/shop/
By the way you'll find some players in Cergy, despite there is no games shop in Cergy.
If I remember well they play on Wednesdays, even if most of them are coming to Troll 2 Jeux on Tuesdays. Evrach on this forum should be the one to contact for more info about that
.
See you soon for a game!