Guild Wars 2

Not only do you have to pay the listing fee, there is what seems to be a 10% collecting. Why? When the Trading Post tells me I should be making 21s and then it turns out that I only get 18s from my sale, one would think the Trading Post is broken.

They need to have a lot of gold sinks in the game to prevent inflation as the game gets older. The way it is right now is probably fine.

It is one way to keep inflation down. Gold sinks are a way to make sure prices for items stay at a decent normal level. Without them, people would be selling stuff on their for ridiculous amounts of gold and it would ruin the game community before it even really got started. It is just something you have to keep in the back of your mind when selling items that the higher the price you put, the higher your “taxes” will be on it.