i will say that: SE need to take a stance firm against this. Merc generally ask really high sum of gil and you can't believe everybody to have earn it legally. indeed some have gain this gils really hard. but that don't change the fact that merc are part of the problem. they are saying, we have no responsability into this sort of behavior but it's simply look away.

why someone need to buy gils for the game? (i'm talking about the reason there) for buy the crafting gear or... get a carry via merc. they are the principal reason of why people buy gils. crafting was nerfed because of this... but SE still left the merc alone because they are using the grey part of the ToC.

merc are simply doing money laundering by making like they are not part of the problem.