The amulet coin is a really cool item to have one of your Pokémon hold, but it doesn’t make a whole lot of sense in the real world. You know, unlike spontaneous evolution.
It’s funny because that IS exactly what the item’s description says.
When you lose in Pokemon, half your money disappears. If you assume the same for trainers, doesn’t this mean you take ALL of their money? With all their Pokemon defeated? That seems harsh!