The Biggest Problem With Item Upgrade And How You Can Solve It

WoW Upgrades - The Item Upgrader
Upgrades give you boosts in certain statistics. Each upgrade increases item level by +3. A random additional substat is also added to each upgrade.
The more modernized gear generally has a more value in trade as long as it meets low requirements (like the FB sorc's shield) or has a high stat variance (like the eth titan weapons). The latter are less valuable from upgrading due to the requirement to roll to get a perfect version.
Recycle Points
The item upgrader enables players to upgrade gear to a higher item level by providing the appropriate currency to the NPC. Upgrades can be applied to any type of weapon or armor. However, the item used for the upgrade will be consumed for the duration of time and can't be used again. Upgrades can also be applied to enhancements.
The upgrader can be found in all major cities, and can be accessed at any time to upgrade your gear. To keep your gear current, it is recommended that you visit the upgrader every couple of weeks.
Upgrades will cost more depending on the level of the item, however they'll always be less expensive than purchasing new gear. For item upgrades upgrading a chest piece from Benthic to 385 levels will cost 20 recycle points, while purchasing the same item from another player will costs 105.
Valorstones
Upgrades are functional items that are used to upgrade weapons, tools, armor, and accessories. They can be bought by players through NPCs who sell upgrades for items in exchange for different currencies, and may also be found in random treasure lists. Once an upgrade has been purchased, it can be applied to any weapon, tool, or armor with a The button will show the preview of an item's next upgrade level, when there are enough materials.
The cost of upgrades varies based on the slot of the item and the current item level and the weapon's price is higher than gloves or bracers, for example. Each upgrade costs 15 Flightstones plus a set number of crests. Some upgrades offer a discount on the Flightstones. Once an item has been upgraded to a certain degree, it can be downgraded and sold to the upgrader for a lower price.
Many locations have upgraders for their items which include the main island and a few outposts. The NPCs offer both an upgrade coupon and a possibility of getting the latest recipe. The discount on upgrades increases according to the number of items being upgraded, and can be boosted by requiring players to complete specific achievements or complete quests.
Icewind Dale does not have an item upgrader at start, unlike Cromwell from Baldur's gate II. Instead the NPCs that are available to facilitate upgrades require a variety of means that are both an improvement and a drawback.
In Season 3, several new features were added to the upgrade system. When a player has an upgrade to a certain item level for a particular armor slot, upgrading further items to that same item level will be less expensive, even when they belong to another set of gear.
The amount of Valorstones needed for upgrades is decreased, and the discount is account-wide. The amount of Harbinger Crests required to upgrade is cut as well, but is only available once certain milestones are reached.
Crests
Players have a number of options for upgrading their equipment in WoW. They can use Flightstones which are a general upgrade currency available to all, or crests, which are more specific and used to upgrade specific levels of the item. Crests are an important component of the Dragonflight Gear Progression System introduced in version 10.1. They come in four ranks.
First, you should know that Crests are only available to gear that is of a particular rank. Each rank comes with a different upgrade path. The most basic and straightforward upgrade process costs just 15 crests while the more complex one requires as many as 20 crests depending on the type of gear being upgraded.
Players can earn crests by finishing content at the appropriate level. This could be done by doing outdoor activities, or by doing dungeons or raids in all difficulty levels to obtain lower-tier gear or Mythic+ raid bosses or dungeons with a heroic difficulty to obtain endgame gear. Crests can be exchanged at an upgrader NPC, like Cuzolth in Dornogal or Vaskarn in Valdrakken to get the appropriate upgrade paths and steps.
Using these new currencies isn't too complicated however, the system introduces some modifications to the upgrade process. When a piece reaches the highest level of upgrade for any rank (Explorer or Adventurer) it will no longer require Flightstones. This is to allow players to upgrade their equipment up to the highest possible ilvl on all their characters instead of relying on seasonal loot.
It's also important to use crests with care, since they are only used for one purpose. It is recommended to put your Whelpling-rank Crests on the highest-quality gear you can locate, and save Drake and Wyrm Crests for the next set of upgrades. This is particularly relevant for items like rings and trinkets that occupy multiple slots. The discount on the account will only be applicable if all slots on the character are filled with high-quality gear.