SOMEDAY by YOUNHA (윤하) has sold 0 copies on streaming services.
SOMEDAY certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of |
| Total sales | 0 | Album-equivalent unit |
Total
Sales: 0
Album-equivalent unit
|
Year-end chart performance for SOMEDAY
| Chart 2008 | Rank | Sales |
 South Korean Albums (Gaon) |
19 | 49,600 |