WoW Upgrades - The item level upgrade item; delphi.Larsbo.org, Upgrader
Upgrades give you boosts in specific statistics. Each upgrade increases Best item upgrade level by 3. A random substat is also increased with each upgrade.
Upgraded gear generally sees greater value for trade as long as it meets low requirements (like the FB shield of the sorc) or a very high stat variance (like eth titan weapons). The latter see less value from upgrading due to the need to roll to get a perfect version.
Recycle Points
The item upgrader allows players to upgrade their gear by giving the currency to an NPC. Upgrades can be applied to any kind of armor or weapon. However, the item used for the upgrade item will be consumed forever and cannot be used again. Upgrades can be applied to enchantments.
The upgrader can be found in all major cities, and can be visited at any time to upgrade your equipment. To keep your gear current it is recommended that you visit the upgrader each several weeks.