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) |
| 1999 | 2805 |
| 2000 | 2816 |
| 2001 | 2792 |
| 2002 | 2821 |
| 2003 | 2828 |
| 2004 | 2810 |
| 2005 | 2725 |
| 2006 | 2662 |
| 2007 | 2648 |
| 2008 | 2703 |
| 2009 | 2801 |
| 2010 | 2918 |
| 2011 | 3069 |
| 2012 | 3150 |
| 2013 | 3186 |
| 2014 | 3262 |
| 2015 | 3347 |
| 2016 | 3297 |
| 2017 | 3402 |
| 2018 | 3534 |
| 2019 | 3626 |
| 2020 | 3621 |
| 2021 | 3666 |
| 2022 | 3556 |
| 2023 | 3470 |
| 2024 | 3330 |