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World of Warcraft Item Upgrades Item upgrades can be used to improve the stats of a particular item. Depending on the upgrade type, it may increase an item's Mark Level or Rarity and boost additional stats. Each item has a track to upgrade it. Each upgrade increases the cost of the next item by a specified amount. Item Level When an item gets upgraded, its basic stats improve in value. The value is the sum of an item's leveled-up perks (attack magic attack and defense). Upgrades can be expensive depending o