There seems to be a bot out there that cycles retainers/alternate character and sets pricing at 1 gil under. You can determine timing, basement pricing by observing and being aware.

IF reported will Square Enix even look into these? They do not seem to care about RMT activity on market boards even if the people doing so are being obvious about it. So I am curious if there is a point to reporting this other activity since it is essentially cheating by having a bot "play" for you 24/7 (likely for rmt purposes)