I was there last week. Right now they have a lot of inventory dedicated to the DC comic franchise. but I did pick up several pieces of other series which I’ve been posting actually this last week.
https://en.numista.com/forum/topic160606.html#dernier
dont expect to find old Coins there though. Bit overall yes, very worth it. If you understand French, they have guided tours which last for 1-1.5hrs. though you must pre book . Overall worth it . They made me 206€ lighter 😂