Diablo 4 Gold that can upgrade and imprint your from xinghong's blog

exchange for the raw resources they provide Diablo 4 Gold that can upgrade and imprint your equipment at different vendors around Sanctuary. This is more beneficial, as the gold you get from selling your equipment usually won’t get you better gear in the long run. 

If you really need gold for the upgrades, the best way to stock up on them is through side dungeons, side quests, and taking part in world events. Going through any of these will easily get you thousands, which you can use for upgrading.

This answers if it’s better to sell or save gear in Diablo 4. The Diablo 4 items game is now available for PS5, PS4, Xbox One, Xbox Series X, and PC.