Its a case of having a box of the biggest or latest records on the scene to dj with , like Ellipses , Mixed Feelings , Jo Jama , and various Butch spins that I cant remember . Then when another record becomes hot or available , you may sell/trade Ellipses or Mixed Feelings to buy said record . I'd say it was a DJ concept and not much to do with collecting , and probably a good way to DJ on the rare soul scene for a young jock
ps . ROD beat me to the post there !
Simon