| Title | Highest Position | Date | Buy |
|---|---|---|---|
| Is for Karaoke (EP) | 24 | 29 Jun 2011 | $6.93 buy |
| Is for Karaoke, Pt. 2 | 47 | 05 Oct 2011 | $6.93 buy |
| Collapsible Lung | 4 | 03 Jul 2013 | $8.99 buy |
| Air for Free | 7 | 22 Jul 2016 | $10.99 buy |
Relient k chart performance in other countries: