We have an ingenious thrift-chain in Canada called "VALUE VILLAGE", where you can just about getting anything - from new, used to vintage - at amazing prices/quality!
Correct me if I'm wrong but the shopping-pyramid is slightly distorted here, I've never seen a thrift store in Germany (well other than one overly-smelly church-run thrift shop with dusty crap) - on that note, nope, never seen one! Do they exist?
What happens with people's unwanted stuff? Does it all go to the "Red Cross", or are Germans "hoarders" and hold on to 'that' stuff until the end? Maybe they're chuckers, like the Japanese, and I should be wandering the streets late at night ... hehe!!