THE SOUND OF - THE GREATEST HITS by GIRLS ALOUD has sold 1,000,000 copies in 29 countries. The album sold best in United Kingdom (900,000 copies), Ireland (15,000 copies) and (0 copies).
THE SOUND OF - THE GREATEST HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Ireland |
15,000 | 1x Platinum | 2006 |
Ireland Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2006
|
 United Kingdom |
900,000 | 3x Platinum | 30 January,2009 |
United Kingdom Sales: 900,000
Certification / note: 3x Platinum
Certification Date / sales as of: 30 January,2009
|
 Europe (IFPI) |
1,000,000 | 1x Platinum | 2008 |
Europe (IFPI) Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2008
|
| Total sales | 1,000,000 | (in 29 countries) |
Total
Sales: 1,000,000
(in 29 countries)
|