People aren't going to reveal any real working secrets or they won't work anymore. Do like real traders do in real life. Some methods are available to you and others are not. Use what is available to you and make money. You're not going to start by making millions a week.

Just like in real life, most investors don't have the capital to push a stock price up and down and trigger clusters of stop orders. Nor do they have access to the order books to know where the clusters are to make stock price chart jump around. The chart itself creates a psychology that moves the market on its own momentum after you start it with your billions you dump into manipulating price. Simply the slope of the line causes emotion. And moving the price around a few percent over the course of a month causes boredom and option contracts to expire worthless. But I digress.

Point is that it's a complex topic you're never going to be given a truly useful answer to. You can't even really define the question. You have to work with what you have.

For example: You could get enough money to buy all of one type of crafting material in the game. Most all of it. You will drive the price way up until supply catches up with demand and as it goes up, you can start selling it a little at a time at increasingly higher prices. Or you can dump all of it back onto the market at a really low price and drive the price way down. Do it at only exclusive trade kiosks, and then you've increased profits for others that use that kiosk for other items just based on foot traffic alone.

Things are different in this game compared to real life stock trading due to unlimited vs limited supply.

But as always, it takes money to make money. If you can't manipulate the price as described above, maybe wireshark the TTC addon and see if you can send phony data and screw with that system. This is also similar to real life criminal activity that surrounds all markets.

Money is based on usury and to convince people to trade real useful resources for useless fiat currency. Usury is then performed on most of the populace. And you can try to avoid it in your country, and you'll probably be bombed to oblivion by other nations in the central banking cartel.

Forget everything else you were told and taught about money and debt. Money is debt. Wealth is debt. The real rich control the natural resources. Point is, money is born of evil. So the whole point is that you will make money once you throw your morals and ethics out the window.

But it's just a game with unlimited resources and money supply. But even still, I've noticed that the game population at large gets very offended by the real methods used to make lots of in-game gold. Naturally, because they're generally unethical. This is also why your question is a non-starter. It's only going to welcome dudes in green dollar sign suits trying to sell you books explaining all the secrets to getting rich quick.

/rant.

I've noticed yesterday in motd of the guild I am in that the best seller made 18 friggin millions last week. That is absolutely surreal to me.