Not as much as you can imagine.. I bet Metallica’s S&M or Epica’s Classical Conspiracy are much more cost effective than some of the over-synthesized Kanye West albums.
http://www.youtube.com/watch?v=EtkOSsHedzw
http://www.youtube.com/watch?v=jC89FexL52k
http://www.youtube.com/watch?v=VnW_u7dl_Sk
http://www.youtube.com/watch?v=MVvDOTxEb_Q