Hava a look at the first half of 2010's album sales chart. 
Top 30 Sales from hottracks
1. SNSD Oh! 2nd Album
 2. Suju Bonamana A ver.
 3. SNSD Star Collection Card season 1
 4. 2AM 1st mini Album
 5. SNSD RDR 2nd Album Repackage
 6. Suju Bonamana B ver.
 7. B2ST 2nd mini Album
 8. 2PM 3rd Single
 9. Epik High Epilogue
 10. C.N.Blue 2nd mini Album
 11. C.N.Blue 1st mini Album
 12. KARA 3rd mini Album
 13. SS501 Destination (nomal ver.)
 14. 2pm 1st Album
 15. DBSK Star Collection Card
 16. Verandah Project (Kim Dong Ryul/Lee Sang Soon)
 17. Rain 1st mini Album
 18. Supreme Team 1st Album
 19. U-Kiss 1st Album
 20. 2AM 1st mini Album Repackage
 21. 4Men The 3rd Generation
 22. Lee Hyori 4th Album
 23. Vibe 4th Album
 24. f(x) 1st mini Album
 25. SS501 Destination (special edition)
 26. Younha 3rd Album
 27. Lucid Fall 4th Album
 28. Lee Seung Hwan 10th Album
 29. SNSD Star Collection Card season 2 : 2010 World Cup
 30. Hot Poteto Kim C [See Saw]
cr. hottracks
TOP 25 Album Sales from Hanteo
1. SuJu 4th Album A ver. + B ver. + repack 185,254
 2. SNSD 2nd Album + repack 167,017[/b]
 3. 2AM 1st mini Album + repack 48,264
 4. SS501 [Destination] (special+normal) 37,387
 5. Rain 1st mini Album 33,878
 6. 2PM 3rd Single 29,609
 7. B2ST 2nd mini Album 24,404
 8. KARA 3rd mini Album 23,358
 9. Verandah Project (Kim Dong Ryul/Lee Sang Soon) 21,172
 10. T-ara 1st Album + repack 18,688 Total sales since last year = 25,721
 11. C.N.Blue 1st mini Album 18,688
 12. Lee Hyori 4th Album 17,441
 13. Epik High [Epilogue] 17,293
 14. C.N.Blue 2nd mini Album 13,928
 15. 2pm 1st Album 13,645 Total sales since last year = 59,785
 16. f(x) 1st mini Album 12,635
 17. Lee Seung Hwan 10th Album 11,581
 18. G Dragon Shine A Light Concert 11,443
 19. MBLAQ 2nd Single 11,127
 20. U-Kiss 1st Album 10,794
 21. TVXQ 3rd Asia Tour Concert (SRN) 10,793
 22. 4Men [The 3rd Generation] 10,415
 23. Vibe 4th Album 10,128
 24. Lucid Fall 4th Album 9,896 Total sales since last year = 21,692
 25. Hot Potato Kim C [See Saw] 9,631
Boy Band
 1. SuJu 4th Album + repack 185,254
 2. 2AM 1st mini Album + repack 48,264
 3. SS501 [Destination] (special+normal) 37,387
 4. 2PM 3rd Single 29,609
 5. B2ST 2nd mini Album 24,404
Girl Group
 1. SNSD 2nd Album + repack 167,017
 2. KARA 3rd mini Album 23,358
 3. T-ara 1st Album + repack 18,688
 4. f(x) 1st mini Album 12,635
 5. Wonder Girls 4th Single 8,973
Solo Male Artist
 1. Rain 1st mini Album 33,878
 2. Lee Seung Hwan 10th Album 11,581
 3. G Dragon Shine A Light Concert 11,443
 4. Lucid Fall 4th Album 9,896
 5. Bobby Kim 3rd Album 8,985
Solo Female Artist
 1. Lee Hyori 4th Album 16,725
 2. Kim YoonA 3rd Album 8,701
 3. YounHa 3rd Album 7,122
 4. Ali (Jung In) 1st mini Album 4,980
 5. Gummy 1st mini Album 4,294
Rock Band
 1. C.N.Blue 1st mini Album 18,688
Total Sales from all albums (2010.01.01~2010.06.30)
 1. Super Junior 198,641
 2. SNSD 184,487
 3. 2AM 53,451
 4. 2PM 50,216
 5. SS501 43,546
Source : snow music @ blog daum
 Credit : kui4eva @ soompi