MDPI 2019: price increases, some hefty, and more coming in July | Sustaining the Knowledge Commons / Soutenir les savoirs communs

n brief: MDPI has increased prices, in many cases quite substantially (some prices have more than tripled). Even more price increases are anticipated in July 2019, which will have the effect of doubling the average APC and tripling the most common APC. Unlike other publishers’ practices, there are no price decreases. Comment and recommendation: open access advocates, along with policy makers and research funders, and keen to support a transition to open access. In my opinion, the enthusiasm of payers to support APC journals is causing an unhealthy and unsustainable distortion in the market. My advice: stick with green OA policy. Require deposit of funded works in an open access repository. This is a better means to ensure ongoing preservation and open access, and exerts market pressure in a way that is more suited to the development of an economically sustainable open access system.