I bought German posters about 10 years ago by the KILO, the seller worked as a rubbish collector who drove a truck to pick up miniskips, one day he had a job at Constantin in germany to collect some skips, he noticed they were full of posters, so he took them home and unloaded them all instead of taking to the tip.
nothing too vintage, 70's and 80's. But I am sure many people got some good deals from him. He did his research and seperated some titles, mainly the zombie and cannibal stuff, but he did good deals. There was often sets oif german lobby cards, press books, A1's and some titles A0's.
I still have boxes of the crap, and a few folders of the better lobby card sets and press books (Eaten Alive, Mark of the devil, Last Hunter, Les Demons, etc etc) and some of the better posters, but most of them sold long ago (but a handfull paid for the BOXES of stuff I got from him many times over.