COLLECTED by MASSIVE ATTACK has sold 1,007,500 copies in 30 countries. The album sold best in United Kingdom (600,000 copies), France (75,000 copies) and Belgium (25,000 copies).
COLLECTED certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
|  Belgium | 25,000 | 1x Gold |  Belgium Sales: 25,000 Certification / note: 1x Gold Certification Date / sales as of:  | |
|  France | 75,000 | 1x Gold | 9 December, 2006 |  France Sales: 75,000 Certification / note: 1x Gold Certification Date / sales as of: 9 December, 2006 | 
|  Grecce | 10,000 | 1x Gold |  Grecce Sales: 10,000 Certification / note: 1x Gold 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 | 
|  Italy | 25,000 | 1x Gold (Sales since 2009) | 2015 |  Italy Sales: 25,000 Certification / note: 1x Gold (Sales since 2009) Certification Date / sales as of: 2015 | 
|  New Zealand | 7,500 | 1x Gold |  New Zealand Sales: 7,500 Certification / note: 1x Gold Certification Date / sales as of:  | |
|  Portugal | 10,000 | 1x Gold |  Portugal Sales: 10,000 Certification / note: 1x Gold Certification Date / sales as of:  | |
|  Switzerland | 15,000 | 1x Gold | 2006 |  Switzerland Sales: 15,000 Certification / note: 1x Gold Certification Date / sales as of: 2006 | 
|  United Kingdom | 600,000 | 2x Platinum | 22 July, 2013 |  United Kingdom Sales: 600,000 Certification / note: 2x Platinum Certification Date / sales as of: 22 July, 2013 | 
|  Europe (IFPI) | 1,000,000 | 1x Platinum | 2010 |  Europe (IFPI) Sales: 1,000,000 Certification / note: 1x Platinum Certification Date / sales as of: 2010 | 
| Total sales | 1,007,500 | (in 30 countries) | Total Sales: 1,007,500 (in 30 countries) | 

