NOW BEST by NOW SERIES (JAPAN) has sold 400,000 copies in Japan.
NOW BEST certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Japan |
400,000 | 2x Platinum | May 1999 |
Japan Sales: 400,000
Certification / note: 2x Platinum
Certification Date / sales as of: May 1999
|
| Total sales | 400,000 | (in 1 country) |
Total
Sales: 400,000
(in 1 country)
|
Year-end chart performance for NOW BEST
| Chart 1999 | Rank | Sales |
| Japanese Albums (Oricon) |
59 | 455,430 |