Omg!! I found it! Hopefully it’s legit lol Please also scroll down to the bottom and fill out the “contact form” to help request for more stuff. I requested for figurines and the whole OST album, not just the 26 released on iTunes and Spotify, but for all songs and bgm too.

https://cpop-universe.com/collections/fangs-of-fortune-merch

It's my first time being so into a drama and I didn't know there was merch !! I am so exited thank you for sharing ( now i am poor i think hahaha)  I will request for figurines ;-)

I've used cpop universe before and it's legit. Quality can vary but that's on the original companies.  Most things are preorders so be prepared to wait.