I get 99% of my bikes and bike items from old french men who have been convinced (by shops, magazines etc) that old bikes are rubbish, un-usable and are only worth 20 euros.
I was buying a 70's olmo a while back with a mix of campagnolo and zeus from a flee market. My french gf was pretending to be english to force me to do the negotiations to help my french. I offered 20 euros, and they happily accepted and he explained to me about his bike, what campagnolo is and tubulars etc.
As we left with the bike she laughed and said to her husband in french 'only an english fool would buy a rubbish bike like that'