The Trident of Dark Tides is a special weapon in Sea of Thieves, introduced with the recent 2.2.0 update supporting the launch of the game’s third season.
Can you sell the Trident of Dark Tides in Sea of Thieves?
To put it simply: no, you cannot sell the Trident of Dark Tides to any vendor, for either gold or reputation in Sea of Thieves.
The Trident of Dark Tides cannot be bought, and it also can’t be stored or picked up from a weapon locker.