Stripey popped up on Hontou ni with a typical tale of woe in respect of the market of has-been and obsolete items. It was my experience too: if you want to find anything in particular, be prepared to walk a lot. He even combed through shops at Otome Road.

Internet solved this issue long ago, but again in my experience, the overwhelming majority of sellers refuse to ship outside Japan. This is where a post at Relentless about Tenso may prove useful (I haven't had a chance to put it into action thanks to mostly shopping at Play-asia recently).