Just looked at some of the auctions on and found an e-mail link contact within that auction.

Here's the auction link...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=56006&item=5112146405

Now notice the e-mail link...

cardsone2@cardsone.com

I did a Whois search of cardsone.com

Registrant:
James Rodgers (CARDSONE2-DOM)
927 Fairway Lane
Soddy Daisy, TN 37379
US

And then a Whois search of prograding.com (PGS Website domain http://www.prograding.com )

Registrant:
James Rogers (PROGRADING-DOM)
927 Fairway Lane
Soddy Daisy, TN 37379
US

Administrative Contact:
Rogers, Judy (JRE583)
info@PROGRADING.COM
Professional Grading Service, Inc
PO Box 60027
Chattanooga, TN 37406
US

And then a Whois search of pgsgrading.com (PGS Website domain also http://www.pgsgrading.com )

Administrative Contact:
Professional Grading Service, Inc.
Judy Rogers
PO Box 60027
Chattanooga, TN 37406
US

There are also more names using cardsone...

cardsone1
cardsone2
cardsone3 NO RECENT AUCTIONS TO VIEW
cardsone4

I also noticed that the payment address for cardsone1, cardsone2 and cardsone4 inside the auctons were the same...
CardsOne1 P.O. Box 5415 Chattanooga, TN 37406
Cardsone2 Po box 5415 Chattanooga Tn 37406
CardsOne 4 P.O. Box 5415 Chattanooga, TN 37406