The vendor window has been updated with a “Sell Junk” button in Patch 10.1.5 allowing players to get rid of all unnecessary gray items with a single button click.
The UI team continues to refine the interface throughout Dragonflight. The latest addition comes in the form of a new button that’s visible when talking to vendors.
A function that previously required third-party addons has now been baked into the game. When you click on the Sell All Junk Items button, gray items will automatically be sold to vendors.