In my opinion the issue is simple to get rid of these.

As a player who is online all the time and posts on the MB, I know most of those Gil farmers who really post low prices on MB for quick sells. If SE would trace back the retainer to the bot/player and then when they transfer the Gil to another Bot/player, they could see who the main toon is for selling and transferring Gil.

That way you can delete or shut down the Gil seller with the Gil and also those farmers who post something on the MB at way under stupid prices just so it sells faster.

I sent in about 3-4 retainers names to SE last year and still a year later they are undercutting and sells thousands of items everyday.

It doesn’t take a rocket scientist to finally get rid of the bots and Gil sellers. All it takes is a little detective work.