Vendors can be found in main town locations and out in the world of Sanctuary.
Types of Vendor
Known vendor types include:
Restocking
A vendor's items for sale will change over time. Should you not find what you are looking for, the items they sell will change. In Diablo 4 vendors have a timer which shows when the vendor will restock their goods with new items.
Restocking time is thought to be 60 minutes.
Are Vendors worth using for items?
Unlike previous Diablo games, the vendors will actually sell some decent Rare items so it's worth paying attention to the stock and check back often when a new supply is added during each restocking session.
Don't dismiss the vendors as a source of gear.