How do you react to being undercut?

[Wazabi]

People constantly manipulating price of certain materia.

example: This was sold with 4.5k gil last night when i went to bed.

It's pretty easy to spot these kind of manipulation...but how much gils were they able to make through this? The person in your picture would need to sell at least 12 PietyIII at 20k to break even...and within that 7 hour span, he only managed to sell 3. Manipuilations such as these has a window of time for you to capitalize. The longer it is, the more likely some other players supplying that goods is going to come in and undercut you, which will ruin your play. High population server makes it harder to pull that off.

[waca]

It's pretty easy to spot these kind of manipulation...but how much gils were they able to make through this?
High population server makes it harder to pull that off.

In my opinion Piety III is not a very good target. (But someone did it anyway)
There are some other materias, I believe some may figured it out, I won't name it here, have greater demand where these manipulators made money from, although I am only assuming they are making money since they have been doing this for a while.

Yojimbo is a relative low population server, I don't know how to summarize up our market habitat in a few lines, but I hope Wind shards sell at 44 gil, Lightning 40 gil (lowest price/bot price) can give you a slightly vague idea.

[Wazabi]

In my opinion Piety III is not a very good target. (But someone did it anyway)
There are some other materias, I believe some may figured it out, I won't name it here, have greater demand where these manipulators made money from, although I am only assuming they are making money since they have been doing this for a while.

Yojimbo is a relative low population server, I don't know how to summarize up our market habitat in a few lines, but I hope Wind shards sell at 44 gil, Lightning 40 gil (lowest price/bot price) can give you a slightly vague idea.

Yeah, I can paint the market picture in your server.