GRADATION by SHIZUKA KUDO (工藤 静香) has sold 0 copies on streaming services.
GRADATION 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 GRADATION
| Chart 1989 | Rank | Sales |
 Japanese Albums (Oricon) |
9 | 615,740 |