So this ALSO annoys me , another oversight of a rushed public release , sorry I mean beta test .
So the blacksmith has an all junk , all items option . Why hasn't the merchant got - sell all items ? Instead we have to manually select all if you wish to sell all . Its not as if you can't buy them back . However for some reason the tab for using buy back items has less slots , or should I say does not allow more items that u have sold . It only has 10 I think , so if you sell more than ten items the extra items are not selectable.