WOW 1998 by WOW SERIES has sold 525,000 copies in Canada and United States.
WOW 1998 certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
25,000 | 1x Gold | 1999 |
Canada Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of: 1999
|
 United States |
500,000 | 1x Platinum | 14 April, 1998 |
United States Sales: 500,000
Certification / note: 1x Platinum
Certification Date / sales as of: 14 April, 1998
|
| Total sales | 525,000 | (in 2 countries) |
Total
Sales: 525,000
(in 2 countries)
|
Year-end chart performance for WOW 1998
| Chart 1998 | Rank |
| US Albums (Billboard 200) |
171 |