Welcome Back !

I don't know where you are located but my favorite supplier , by far , is  Scale Hobbyist  .

https://www.scalehobbyist.com/index.php

They don't carry Citadel  , I go to Texas Art Supply here locally for that kinda stuff  , but they do also have a website ,

https://www.texasart.com/

Hmmm  , I don't see Citadel on their website . They definitely had it in the store last time I was there .

You can get it on Amazon but you might get it cheaper elsewhere .