MAINSTREAM SELLOUT by MACHINE GUN KELLY has sold 100,000 copies in Canada and United Kingdom.
MAINSTREAM SELLOUT certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
40,000 | 1x Gold | August 30, 2022 |
Canada Sales: 40,000
Certification / note: 1x Gold
Certification Date / sales as of: August 30, 2022
|
 United Kingdom |
60,000 | 1x Silver | 21 October, 2022 |
United Kingdom Sales: 60,000
Certification / note: 1x Silver
Certification Date / sales as of: 21 October, 2022
|
| Total sales | 100,000 | (in 2 countries) |
Total
Sales: 100,000
(in 2 countries)
|
Year-end chart performance for MAINSTREAM SELLOUT
| Chart 2022 | Rank |
 Australian Albums (ARIA) |
95 |
 Belgian Albums (Ultratop Flanders) |
173 |
 US Albums (Billboard 200) |
121 |