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 | 5308 |
| 2000 | 5332 |
| 2001 | 5131 |
| 2002 | 5084 |
| 2003 | 5077 |
| 2004 | 4984 |
| 2005 | 4817 |
| 2006 | 4921 |
| 2007 | 4908 |
| 2008 | 4900 |
| 2009 | 4935 |
| 2010 | 4917 |
| 2011 | 4837 |
| 2012 | 4831 |
| 2013 | 4758 |
| 2014 | 4657 |
| 2015 | 4585 |
| 2016 | 4574 |
| 2017 | 4576 |
| 2018 | 4731 |
| 2019 | 4924 |
| 2020 | 5090 |
| 2021 | 5098 |
| 2022 | 4950 |
| 2023 | 4862 |
| 2024 | 4739 |