BUT SERIOUSLY, FOLKS by JOE WALSH has sold 1,160,000 copies in Canada, United Kingdom and United States.
BUT SERIOUSLY, FOLKS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1978 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1978
|
 United Kingdom |
60,000 | 1x Silver | 19 September, 1978 |
United Kingdom Sales: 60,000
Certification / note: 1x Silver
Certification Date / sales as of: 19 September, 1978
|
 United States |
1,000,000 | 1x Platinum | 7 August, 1978 |
United States Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 7 August, 1978
|
| Total sales | 1,160,000 | (in 3 countries) |
Total
Sales: 1,160,000
(in 3 countries)
|
Year-end chart performance for BUT SERIOUSLY, FOLKS
| Chart 1978 | Rank |
| Canadian Albums (RPM) |
35 |
| US Albums (Billboard 200) |
67 |