WoW Upgrades - The item level upgrade Upgrader
Upgrades give a guaranteed boost to specific stats. Each upgrade increases the item level by +3. Each upgrade also boosts an unspecified substat.
Upgraded gear generally sees higher trade value regardless of whether it has low requirements (like the FB shield of the sorc) or has a 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 lets players upgrade their gear by giving the currency to an NPC. Upgrades can be applied to any type of armor or weapons. However, the item upgrader mod that is used to upgrade will remain in use for a long time and can't be used again. Upgrades can be used to create the enchantments.
You can upgrade your gear at any time by visiting the upgrader in any major city. It is recommended to visit the upgrader every couple of weeks to keep your equipment up to date.
Upgrades can cost more based on the level of the item but they will always be cheaper than buying new equipment. Upgrades like upgrading a Benthic chest to the level of ilvl385 will cost you 20 recycle points. If you purchase a similar item upgrades, it will cost you 105.
Valorstones
Upgrades are items that can be used for weapon, armor, tool, and accessory upgrades. They are purchased by players from item upgrader NPCs in exchange for a variety of currencies, and can also be found in random treasure lists. Once purchased, an upgrade is able to be used on any weapon, tool or armor. The button will show the preview of an item's next upgrade level, when there are enough materials.
Upgrade costs differ based on the slot of the item upgrading and the current item upgrader mod level. For example, weapons will cost more than bracers, or gloves. Each upgrade costs 15 Flightstones plus a certain number of crests. Some upgrades give discounts on Flightstones. After an item has been upgraded to a certain amount, it can be degraded and returned to the upgrader for a lesser amount of both currencies.
A lot of locations offer upgraders for items, including the main Island and some outposts. The NPCs offer both an upgrade discount as well as a chance to obtain a new upgrade recipe. The discount on upgrades increases according to the number of items being upgraded. It is also possible to be increased by having players complete specific achievements or quests.
Icewind Dale does not have an upgrader for items at the start unlike Cromwell from Baldur's gate II. Instead, the NPCs that can be used to upgrade must be acquired through several methods that are both an improvement as well as a disadvantage.
In Season 3 the upgrade system was altered a bit, with numerous new features added. Once an upgrade has been completed to a certain item level for an armor slot, upgrading other items to the same level, will cost less. This is regardless of whether the items come from another set of equipment.
The discount is available to all accounts. The amount of Harbinger Crests needed for upgrades is reduced also, but is only available once certain milestones are achieved.
Crests
When it comes to upgrading equipment in WoW players have a couple of choices. Flightstones are an item that is available to everyone for upgrading. Crests are more special and are utilized during specific item level upgrades. Crests are an essential part of the Dragonflight gear progression system that was introduced in 10.1 and are available in 4 ranks.
The first thing to be aware of is that crests are only able to be used on gear of a specific rank, and that each rank has different requirements for upgrading. The simplest and easiest upgrade is 15 crests. The most complex upgrade can require up to 20 crests, contingent on the type of equipment that is being upgraded.
Players can earn crests by finishing content at the appropriate level, which involves walking around and performing outdoor activities for lower-tier gear, raids or dungeons of all difficulty for items of higher tier or Mythic+ heroic raid bosses or dungeons for gear that is used in the endgame. These crests can then be exchanged at an upgrader NPC, such as Cuzolth in Dornogal or Vaskarn in Valdrakken, for the appropriate upgrade items paths and steps.
The new currency system isn't complicated to use, but it does bring some modifications to the upgrade process. For instance, when an item reaches the highest level of upgrade for any rank (Explorer, Adventurer, Veteran, Champion, Hero, or Mythic) it won't need Flightstones to be upgraded. This change allows players to upgrade their equipment to the highest possible level for all their characters, instead of relying on seasonal loot.
Another notable change is that crests have one use and it's crucial to use them wisely. For instance, it's a good idea to use all of your Whelpling-rank crests on the best equipment you have, and then save Drake and Wyrm crests for the next round of upgrades you plan on making. This is particularly applicable to items like trinkets and rings that fill several slots. The account-wide discount will only be applicable if all slots on the character are filled with high-quality equipment.
Upgrades give a guaranteed boost to specific stats. Each upgrade increases the item level by +3. Each upgrade also boosts an unspecified substat.

Recycle Points
The item upgrader lets players upgrade their gear by giving the currency to an NPC. Upgrades can be applied to any type of armor or weapons. However, the item upgrader mod that is used to upgrade will remain in use for a long time and can't be used again. Upgrades can be used to create the enchantments.
You can upgrade your gear at any time by visiting the upgrader in any major city. It is recommended to visit the upgrader every couple of weeks to keep your equipment up to date.
Upgrades can cost more based on the level of the item but they will always be cheaper than buying new equipment. Upgrades like upgrading a Benthic chest to the level of ilvl385 will cost you 20 recycle points. If you purchase a similar item upgrades, it will cost you 105.
Valorstones
Upgrades are items that can be used for weapon, armor, tool, and accessory upgrades. They are purchased by players from item upgrader NPCs in exchange for a variety of currencies, and can also be found in random treasure lists. Once purchased, an upgrade is able to be used on any weapon, tool or armor. The button will show the preview of an item's next upgrade level, when there are enough materials.
Upgrade costs differ based on the slot of the item upgrading and the current item upgrader mod level. For example, weapons will cost more than bracers, or gloves. Each upgrade costs 15 Flightstones plus a certain number of crests. Some upgrades give discounts on Flightstones. After an item has been upgraded to a certain amount, it can be degraded and returned to the upgrader for a lesser amount of both currencies.
A lot of locations offer upgraders for items, including the main Island and some outposts. The NPCs offer both an upgrade discount as well as a chance to obtain a new upgrade recipe. The discount on upgrades increases according to the number of items being upgraded. It is also possible to be increased by having players complete specific achievements or quests.
Icewind Dale does not have an upgrader for items at the start unlike Cromwell from Baldur's gate II. Instead, the NPCs that can be used to upgrade must be acquired through several methods that are both an improvement as well as a disadvantage.
In Season 3 the upgrade system was altered a bit, with numerous new features added. Once an upgrade has been completed to a certain item level for an armor slot, upgrading other items to the same level, will cost less. This is regardless of whether the items come from another set of equipment.
The discount is available to all accounts. The amount of Harbinger Crests needed for upgrades is reduced also, but is only available once certain milestones are achieved.
Crests
When it comes to upgrading equipment in WoW players have a couple of choices. Flightstones are an item that is available to everyone for upgrading. Crests are more special and are utilized during specific item level upgrades. Crests are an essential part of the Dragonflight gear progression system that was introduced in 10.1 and are available in 4 ranks.
The first thing to be aware of is that crests are only able to be used on gear of a specific rank, and that each rank has different requirements for upgrading. The simplest and easiest upgrade is 15 crests. The most complex upgrade can require up to 20 crests, contingent on the type of equipment that is being upgraded.
Players can earn crests by finishing content at the appropriate level, which involves walking around and performing outdoor activities for lower-tier gear, raids or dungeons of all difficulty for items of higher tier or Mythic+ heroic raid bosses or dungeons for gear that is used in the endgame. These crests can then be exchanged at an upgrader NPC, such as Cuzolth in Dornogal or Vaskarn in Valdrakken, for the appropriate upgrade items paths and steps.
The new currency system isn't complicated to use, but it does bring some modifications to the upgrade process. For instance, when an item reaches the highest level of upgrade for any rank (Explorer, Adventurer, Veteran, Champion, Hero, or Mythic) it won't need Flightstones to be upgraded. This change allows players to upgrade their equipment to the highest possible level for all their characters, instead of relying on seasonal loot.
Another notable change is that crests have one use and it's crucial to use them wisely. For instance, it's a good idea to use all of your Whelpling-rank crests on the best equipment you have, and then save Drake and Wyrm crests for the next round of upgrades you plan on making. This is particularly applicable to items like trinkets and rings that fill several slots. The account-wide discount will only be applicable if all slots on the character are filled with high-quality equipment.