I SHOULD COCO by SUPERGRASS has sold 323,270 copies in Japan and United Kingdom.
I SHOULD COCO certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Japan |
23,270 | Oricon charts |
Japan Sales: 23,270
Certification / note: Oricon charts
Certification Date / sales as of:
|
|
 United Kingdom |
300,000 | 1x Platinum | 1 September, 1995 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1 September, 1995
|
| Total sales | 323,270 | (in 2 countries) |
Total
Sales: 323,270
(in 2 countries)
|
Year-end chart performance for I SHOULD COCO
| Chart 1995 | Rank | Sales |
 European Albums (Music & Media) |
81 | |
| UK Albums |
42 | 350,000 |
| UK Artist Albums |
34 |