T-mobile Prepaid Refill cards

I was just curious,how are people getting these cards for less then their actually worth. Like look here guys.
http://cgi.ebay.com/T-Mobile-To-Go-PREPAID-Refill-Card-100-00-Value-NEW_W0QQitemZ130372852586QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1e5ad3db6a#ht_3469wt_984

How can he be making money off of this, there must be a wholesaler or something.

They are either stolen or liquidation stock.

ohhh , i see, but how an it be stolen, because I don't think it has any value, until it is actually bought.