No need for multi-million budgets when you have great original material, wonderful photography and a creative, visionary edge. Also, they managed to pack such an extraordinary story in less than 30 minutes.
I think one of the things I liked about this film is that it really evokes that strange eerie feeling of mystery when watching it. Like the first film of Ghost in the Shell (the Japanese one, of course), or Blade Runner do.
aaaah.. Mamoru Oshii's Ghost in the Shell :) What a master work.