ONCE UPON A STAR by BAY CITY ROLLERS has sold 373,280 copies in Japan and United Kingdom.
ONCE UPON A STAR certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Japan |
73,280 | Oricon charts |
Japan Sales: 73,280
Certification / note: Oricon charts
Certification Date / sales as of:
|
|
 United Kingdom |
300,000 | 1x Platinum | 17 May, 1978 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 17 May, 1978
|
| Total sales | 373,280 | (in 2 countries) |
Total
Sales: 373,280
(in 2 countries)
|
Year-end chart performance for ONCE UPON A STAR
| Chart 1975 | Rank | Sales |
 Australian Albums (Kent Music Report) |
14 | |
| UK Albums (Music Week) |
2 | |
| Chart 2012 | Rank | Sales |
| Japanese Music DVD (Oricon) |
48 | 40,000 |
Decade-end chart performance for ONCE UPON A STAR
| Chart 1970's | Rank |
| UK Albums (Music Week) |
37 |