Oricon just published the top earners of 2009 and DBSK placed 3rd behind Arashi and EXILE.
Since it's Oricon, only singles, albums, and DVD sales are counted.
(x 1 million yen)
*1 14,461.3 嵐
*2 12,932.7 EXILE
*3 *6,895.2 동방신기 - DBSK
*4 *5,374.4 B'z
*5 *5,200.2 The Beatles
6.895 billion ¥ is about 77 million US dollars, says Google conversion.
http://dnbn.pe.kr/db01/23302