And that is precisely the point - DJ's are booked (generally) because they have good collections, which they have built over the years whilst still adding big name, high cost items. The fact that times are different now is irrelevant - we are at a place in time. So young wanna be DJ's can't expect to rock up and say "I can't afford to buy a decent collection because, well, times have a changed, but will you let me DJ? I can play some boots though".