I edited uboatnut post to correct two mistakes, those sellers are NOT the cartel.
Here is a more complete listed of names, although I am sure he has many more that have not yet been uncovered. He uses the unknown accounts for shill bidding and to build up for possible future use as seller accounts. I would estimate that he has a total of 40-50 accounts.
dolcegarbana INACTIVE (reactivated)
dustiwashingto-0 ACTIVE (shill bidder)
mint.stamps INACTIVE (private)
stampdeals ACTIVE (NARU & reactivated)
tokenshop ACTIVE (shill bidder)
kcaramat is correct, anyone who is buying higher end stamps on eBay
should become familar with his 'MO' and learn how to spot him. It is actually not too hard but publishing this info will only allow him to improve. If anyone needs assistence they should use this community and ask questions about a listing.