Some items do behave like that.
The greatsword from the medusa quest comes to mind: it binds to account when you loot it, and binds to the first character to actually equip it.
Sounds more like a curse than a magical item...
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I still have a mild issue with inconsistency in how gears binds.
Some sets bind to account - Chronoscope.
Some sets bind to character - Red Fens.
The sets from Red Fens also drop as quest rewards, when they do I can't share around to more fitting characters.
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About Sharn gear: most of it is priced UNDER typical rates for a given item's level.
Nicked weapons cost LESS than the minimum item value brokers will buy.
Maybe try selling them over Ataraxia...