DUETS: THE FINAL CHAPTER by NOTORIOUS B.I.G. has sold 1,115,000 copies in Ireland, United Kingdom and United States.
DUETS: THE FINAL CHAPTER 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 |
100,000 | 1x Gold | 28 April, 2006 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 28 April, 2006
|
 United States |
1,000,000 | 1x Platinum | 3 February, 2006 |
United States Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 3 February, 2006
|
| Total sales | 1,115,000 | (in 3 countries) |
Total
Sales: 1,115,000
(in 3 countries)
|
Year-end chart performance for DUETS: THE FINAL CHAPTER
| Chart 2006 | Rank |
| UK Albums (Charts Plus) |
146 |
| US Albums (Billboard 200) |
52 |