NOW OR NEVER by YOO SEUNG-JUN (유승준) has sold 0 copies on streaming services.
NOW OR NEVER 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 NOW OR NEVER
| Chart 1999 | Rank | Sales |
 South Korean Albums (Gaon) |
4 | 825,569 |