Once you unlock your first slot at level 8, the best place to get Curios is the Armoury Exchange. The selection updates hourly and can be a good place for avid gamers to peruse more varied selections. If you want to find higher quality options, you should look into Sire Melk's Requisitorium after your reach trust level 11. Yet, purchases from this store can be very expensive, so be sure you want the more valuable wares.