THE MASS by ERA has sold 340,000 copies in France and Switzerland.
THE MASS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 France |
300,000 | 1x Platinum | 2003 |
France Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2003
|
 Switzerland |
40,000 | 1x Platinum | 2003 |
Switzerland Sales: 40,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2003
|
| Total sales | 340,000 | (in 2 countries) |
Total
Sales: 340,000
(in 2 countries)
|
Year-end chart performance for THE MASS
| Chart 2003 | Rank |
 Belgian Albums (Ultratop Wallonia) |
19 |
 Dutch Albums (Album Top 100) |
100 |
| French Albums (SNEP) |
17 |
 Italian Albums (FIMI) |
44 |
| Swiss Albums (Schweizer Hitparade) |
39 |
| Chart 2004 | Rank |
| French Albums (SNEP) |
197 |
| Chart 2005 | Rank |
| French Albums (SNEP) |
196 |