Guild Wars 2

Why I can’t sell item: Pillaging Noble Coat of Rage. I crafted the item and inserted a rune in it. The item is yellow (rare item).

Item:
Rare
Medium
Chest Armor
Required level: 35
Soulbound on use

Xander.1468:

. . . inserted a rune in it . . .

That’s why.

Inserting an upgrade soul binds it.

It does soulbind it. It specifically says when you add an upgrade to an item “This action will make the item Soulbound”, color codes it for emphasis, and gives you a confirmation window.