obviously im looking for one in mint condition and low k's

they are very very hard to get hold of, i had the opotunity to buy one of two last year and let it slide ( from east coast commercials, because they were trying to rip me off), and now i havent seen one since.
would prefer the td5 version, however would definatley look at the 300tdi.
anyone know where the ex energex defenders are sold off?