Where are the cannibal traders and what do they sell?

During Halloween two traders appear at monuments. Both are marked on the map.

Cannibal Confectioner takes Halloween Candy and Rotten Meat: weapons, ammo, medkits, attachments, resources and Halloween skins. Skins go straight to your account.

Brain Merchant takes Rotten Meat and Zombie Brains: resources and resource boxes.

Prices and stock. Stock is shared by everyone on the server and refills over time — if something is sold out, come back later. When many players buy the same item, its price goes up for a while.

Where to get the currency: Rotten Meat — from zombies, Zombie Nests and Pumpkin Buckets. Zombie Brains — from Zombie Nests and the guarded zombie train. Candy — from Pumpkin Buckets.