I see this often - people posting stuff for sale at ridiculously high amounts. For example, Peacock ore goes for 5-6K on my server but there is a couple of postings at 100K (same person). Why would people do this?
  • It's not advertising that you have the item because it is listed by retainer and I don't think you can find out who owns the retainer.
  • Is this a poor man's storage expansion? Put it on the boards for an amount so stupid that it won't sell (hey if it does, bonus) just for the storage.
  • Use it as a way to move gil between characters on the same account (why do this? Tax will kill you)
  • ...