Forums/ The 7th Continent/ General3 messages
Posté
Am i allowed to ask if people are selling expansions, etc for the game? is there a part of the forum dealing with people asking for or selling components? thanks
Posté
No reason you can't ask :)

https://the7thcontinent.seriouspoulp.com/en/forum/category/32/equipment-and-after-sales

This is the forum you are looking for probably, but it is not at all active. Your best bet is ebay or maybe boardgamegeek.
Forums/ The 7th Continent/ General3 messages