Try your local fleamarquet
Local ones here are an amazing source for cds in general and DT of course
and dont forget to pick those used 2nd ed. vampire books while you are down there
assuming that ur in england - try century media (02074820161- ask for Adam) - they got some tees from nuclear blast - i got my 'sun fired blanks' one from them, even tho it took abt 3 months!!; or u could try plastic head (01491825029) or coprorecords.co.uk, or 8ball (01785716985)... lots of mail orders but no dt shirts!!