Over the years I have accumulated quite a few promo DVDs from porn makers like Paradise and Momotaro. Lots of standard stuff (teachers, schoolgirls, and secretaries) and more genre-specific titles (rape, incest, cat fights). Plus there are a few hentai anime features. In total I have about 20 DVDs and about 10 books. I also have a shopping bag full of promo j-pop CDs.
I realize few will believe this but most of it has not been opened before. If anyone wants it send me a PM. I am in Nakameguro.