The Trader is someone you can interact with for quests and buying or selling items. While almost all friendly and neutral characters can be traded with, a Trader is defined as a character who has items independent of his own inventory.

Traders reside in safe areas and can be easily accessed by all STALKERS. A full trader will usually buy and sell a large selection of goods such as Water, Food and Ammunition.

Speak to the Trader if you have radiation poisoning. Vodka can heal up to 25% of radiation absorbed.