I see what you mean about buying stuff in that situation

I own a house (well I own a mortgage payment lol) so I have plenty of space to store CDs, book and other stuff

many of my friends are collectors in one way or another (rare books, singles, albums etc) so whenever we see something that might interest one of us we let them know. there's also heaps of music online we point each other too, not downloads but rare stuff on YouTube that sometimes leads to album or DVD purchases