Also consider these 3 situations and tell me where exactly is the difference: Player A sets up shop where he sells soul ore and writes "a crystals" into description. Player B doesn't notice and loses adena. Players A and B want to trade "a crystals" and they use /trade. Player A puts soul ore there and player B doesn't notice and loses adena. Players A and B want to trade "a crystals" and they drop it on the ground. Player B drops adena, player A picks it and drops nothing.