Check this links, and expand "Price History"
http://www.ffxiah.com/player.php?id=1192349
http://www.ffxiah.com/player.php?id=1192350
http://www.ffxiah.com/player.php?id=1192351
http://www.ffxiah.com/player.php?id=1192352
http://www.ffxiah.com/player.php?id=1192353
... continue until ...
http://www.ffxiah.com/player.php?id=1192368
http://www.ffxiah.com/player.php?id=1192369
http://www.ffxiah.com/player.php?id=1192370
....
More than 20 accounts created only for buy or sell items and change price...
*Sorry if in middle of all this someone is real player.