https://squareblogs.net/okrapa....il1/why-is-there-all
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World of Warcraft Item Upgrades Item upgrades can be used to improve the stats of an item. Based on the type of upgrade, it can boost the rarity of an item or mark Level, and also boost other stats. Each item has a track for upgrading it. Each upgrade increases the cost of the following one by a specific amount. Item Level When an item gets upgraded, its stats improve in value. This is the sum of all of its upgraded benefits (attack, magic attack and defense). Upgr