Midas Touch

This is one of the few ways to make trade gold in the game, so it is worth a try. Plus, it is rather easy. It's only downside is that one of the items necessary to complete it must be purchased with trade gold or Eyrda leaves.

Midas Touch quest can be taken from Christopher, the same npc in FH that gives you the trade run quest. He will have 3 quests each day for you. You must have both a Mercury Statue and an Alchemy Proxy for each of these quests. You can get the statues from AH, a player shop, or buying them from Eyrda Boutique. The alchemy proxy can be obtained from Lawrence or by hitting G. You will need guild merit to pick up these proxies.

For each quest that you complete, you will get one Mercury Revelation that can be read to directly receive a reward, or you can save a few of these and trade them in for something else to get a possibly larger reward. In order to exchange the mercury coupons that you receive from this quest for gold, you must have mercury reputation points. You can get these points by completing trade runs.

The first quest is simply to deliver a package to an npc in FH in a given period of time. If you get in your flying mount and accelerate through the whole delivery, you will easily complete this task.

The second quest is gathering materials. It is basically the same as the first quest, but instead of delivering something to an npc, you are getting something from them. Again, flying mount on acceleration should make this a breeze.

The last one is the catalyst quest. Go to Twilight Town. Directly behind the trackstone you will find an alchemy tutor that will have a quest for you. There are three items on the table in front of him. He will ask you to put three things into the cauldron. All you need to do is put whatever the npc tells you to into the cauldron in the given amount of time then wait until the timer is done. While the golden catalyst is brewing, you will be able to pick up the residue as an extra reward. In exchange for the residue, the npc will give you a high level botany item - these usually sell well in AH if you are not interested in making anything with them. You need to complete this mix 2x to successfully complete this midas quest.

If you are still a little mystified, check out THIS guide.