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WoW Upgrades - The Item Upgrader Upgrades give you an increase in certain stats. Each upgrade boosts the item level by +3. A random additional substat is also added to each upgrade. Upgraded gear generally sees greater value for trade regardless of whether it has low requirements (like the FB shield of the sorc) or a very high stat variation (like the eth titan weapons). Upgrades are not as valuable for the latter due to the requirement to roll a perfect version.