Partly, though how this "known copy" thing is actually calculated baffles me. Whilst dealers aren't sitting on stocks of 100 of any rare records, I don't know how anyone knows where all the copies of anything are, or put another way when some of these reviews of record collections was done. Can't remember anyone doing mine, unless it was when I was in the US - the missues did mention something about us being audited - didn't realise it was for records - and I don't think I am alone.