https://mark-carlson.mdwrite.n....et/how-to-choose-the
https://yamcode.com/a-guide-to....-item-upgrades-from-
World of Warcraft Item Upgrades Items that can be added to weapons, trinkets and armor to increase their stats are called upgrades to the item. They are available through missions, vendors and on the Trading Post. Upgrades to gear can improve the effectiveness of your ship/character in battle. Upgrading equipment increases its Mark Level and Rarity. Upgrade components Upgrade components are items which can be added to