How do you deal with constant undercutting?

[Liam_Harper]

Update: I reported my guy after my last post and this reset, one week after reporting, he's completely vanished from the markets along with every single item he listed. I'm fairly sure he was hit with this weeks ban-wave.

It's good to see Enix do take action, however this guy has undoubtedly made a massive amount of gil even within one week. Quite possibly he's transferred his gil back to Carbuncle on Monday and he'll either move realm (as seem with Klauth's post, RMT sellers seem to be moving onto endgame crafts) or return to us a week or two later (as has happened once before so far).

[Klauth]

Seems that 1 day after reporting, the problem was solved in my server.

For now the retainers in question have vanished from the marketboard and no more ridiculous item flooding spam.
Like Liam_Harper says on the above post the retainers in question did sell some good ammount of "merchandise", just glad for the quick response by enix.

[KageTokage]

If only this worked on those infusion spammers selling close to a thousand of each type of infusion simultaneously.

Also, the crafting bot on my server has been around forever and reported several times but they operate in a more low-key manner by only ever listing one of a given item at a time, and they only undercut by one gil. I have a feeling it might've been the more blatant attempt at controlling the market that made that one get banned (Assuming it really did...).