It estimates the article processing charges (APCs) a journal might charge, based on its visibility, prestige, and impact as measured by the SJR. It does not reflect the actual APC, but rather a calculated approximation based on journal quality.
| Year | Est. APC (USD) |
| 2007 | |
| 2008 | 4617 |
| 2009 | 4659 |
| 2010 | 4780 |
| 2021 | |
| 2022 | 2907 |
| 2023 | 3966 |
| 2024 | 4502 |