Another non-model post. This is the inventory GUI for trading with the Mariner mob in one of my projects.
This mob works differently from Villager or Piglin trading. When spawning, it selects a random item of a random amount out of a small pool of possible trades, and then a second item with an amount matching the point value (each possible item is worth a certain amount of points.)
The player can also buy items using Pearls, which give excess items since their point value is a lot higher. Some trades are "bounty" trades, which either buy or sell pearls for rare items. Shown are Conspicuous Caviar and a Mysterious Map.
Post showcasing the Mariner coming soon.