UNDERCLASS HERO by SUM 41 has sold 150,000 copies in Canada and Japan.
UNDERCLASS HERO certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
50,000 | 1x Gold | 2008 |
Canada Sales: 50,000
Certification / note: 1x Gold
Certification Date / sales as of: 2008
|
 Japan |
100,000 | 1x Gold | July 2007 |
Japan Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: July 2007
|
| Total sales | 150,000 | (in 2 countries) |
Total
Sales: 150,000
(in 2 countries)
|
Year-end chart performance for UNDERCLASS HERO
| Chart 2007 | Rank | Sales |
| Japanese Albums (Oricon) |
71 | 172,888 |