Hi !
I first apologize for my English, but I need to put this comment which is really useful, we all have to improve BTLC.
I think that many people use to empty your pockets BTLC, regardless or not lose money. This is because you can sell without having to approach an auction house. To prevent decay rates of the market, we have several options,
First, you could put a limit on sale items, perhaps up to 15 items at a time do not saturate the market.
Second you have to sell to go to the auction house, like when you pick up the money and items.
Third, I can only think that this trade as extremely low value, because ArenaNet is not interested in us to make money and nothing to buy gems and bought from them for euros. If this were the case, it would be nice if you spend 20 euros you get a bonus if you spend 10 gems. The current procurement system is ridiculous.
A greeting from Spain