Where are merchants in breaches?

They spawn at high-value nodes.

• They show as an orange map icon once someone finds them.
• While players are in a breach it stays open and the stock stays the same.
• Hover a merchant and press Tab to target it.
• Faction-issued gear is worth nothing to a merchant.
• Hubs have merchants too, including the blueprint/industry merchant in Greylock. Merchants also sell hulls.