OA journals non-charging and charging central trends 2010 – 2019 | Sustaining the Knowledge Commons / Soutenir les savoirs communs
For the year 2019, we analyzed around 16000 journals that were fully open access in DOAJ (or whose publishers were listed in DOAJ) at some point from 2010 – 2019. More than half of these journals (58%) published had no publication charge.30% of the journals have publications fees. The most frequent model is APC (28% of total) followed by APPC (page charges), under 1%. In a few cases the cost was not specified or an unusual model such as charge per word was used. Of all the journals analyzed, the title of 4% of journals were not found and 3% of journals belonged to ceased publication. It was noted that 53 journals (less than 1%) also had hybrid charges (partially open access) in 2019. The global average APC was 908 USD. From 2010 the global average APC has ranged from 906 – 974 USD. The lack of change in the global average contrasts with variation in mode, reflecting change in the market, particularly ongoing entry of large numbers of new journals, gradually increasing maximum amounts for both APC and APPC, and substantial changes we sometimes observe when recording data for particular publishers. We conclude that continuing to calculate the global average is a less fruitful method of studying the transition to open access and plan to continue this longitudinal study by using the historical data gathered to focus on case studies.