I buy CDs because I dont know which tracks Im going to like till I've listened to them. Sometimes a few times. And I generally fund(hardlysurprising) that if an artist has attracted my attention with a song or two that Ive heard on the radio or somewhere, I more often than not enjoy the whole CD. As regards price: whichever way you buy music, even if it's over-priced CDs, it's still a lot cheaper than buying 78's and LPs was when I was a kid.(mind you the music's not as good as when i was a kid, ha ha).