So I have the base game and noticed that getting adventure packs for this game is a mission in itself. There is hardly any shops that stock them and if they do it's random remains of different cycles like Garage Sale find.
Is this game worth investing $ into getting the adventure packs?
I'd recommend having a look at https://talesfromthecards.wordpress.com/. They have all sorts of good info on this game from deckbuilding advice to a beginners buying guide which they rate some of the packs and suggest why you should get them first. This may help you narrow down your search to certain packs.