Earlier today, players from the South Korea server of Tree of Savior, published by Nexon, staged an in-game protest (screenshot below). In this update, which is now live, direct trading between players has been removed. The reason given by Nexon and developer IMC Games is that direct trading aids the growth of currency traders (real money trading), which would cause imbalance to the economy.
To “counter” this and replace direct trading is the auction house. From now, players have to pay some cash to list items, and also to increase the duration an item remains in the auction house. The default duration is 3 hours, with paid durations at 24, 72 and 120 hours. It costs 2, 4, 6 and 8 TP (cash currency) per item. Players are upset about this, and I feel the removal is certainly too extreme.