We also have bot FCs now that are branching out into every market worth selling in on the marketboard. I've found a host of botting FCs across the Crystal data center.
Very easy to spot. The FC usually has 9 to 10 members. It's so active it's lvl 30 *and* listed in the top 25 FCs in the Grand Company Rankings. (Some of them in the top 10.) It will have no sigil, no estate built, no slogan, and closed recruiting. FC rankings will not be customized. Just Master and Officers.
The FC leader usually has 1 combat job at lvl 80 and all hand and land jobs at 80. For some reason they rarely even unlock FSH. They are a 2nd Lieutenant with a given Grand Company. Own and sit in an apartment that is locked. And are usually on 24/7 cycling through hand jobs and crafting. They are dressed in whatever the highest level crafting gear is but no glamours.
Then the next 8 members are leveled high enough to attain retainers and no further. (Usually in the 19-24 level range) They are all officers. They are dressed in whatever gear they had when they hit the magic point in the MSQ they could access retainers. ONE of them usually has unlocked a Grand Company at the lowest rung. (This one may also be dressed differently than the others, but only in veteran status gear.) None of these alts will have ridiculously obvious nonsense names, all names appear 'normal'. All of their retainers will have normal sounding names. Most of the time, these alts are randomized rather than being a default and the alts will vary in what races they are. Most of them will have namedays in the First Astral Moon. (Days may vary, though the more obvious ones are all Halone guardians born on the 1st day of the First Astral Moon.)
8 retainer bot alts are cycled through continuously, logging in and out, interacting only with a retainer bell in one of the three main city-states. Undercutting by 1 gil until they hit a floor. They will only stop occasionally to run to the FC chest and load up on whatever the main crafter has put in there. Then activate sprint to get back to the retainer bell they're programmed to be at and return to stocking and undercutting. It's almost entirely automated.
If the FC has 10 members instead of 9, the odd alt out will be around lvl 1 and just a 'Member' rather than officer. I am not sure of the purpose of this tiny alt. But I have a few theories.
This is why regular players can't sell anything on the marketboard. These types of bot FCs have made it impossible not just for people who enjoy crafting and selling things like you and me, but for smaller sellers who just want to make a few gil but aren't dedicated.
The market is bot driven, now. This isn't sustainable at all. And eventually SE is going to have to do something. Be nice if it were sooner rather than later.