<div dir="ltr">Earlier this year I asked people I knew at Elsevier for a file with all the open access article processing charges (APC) for mathematics journals, and the same for all journals (which they helpfully split into hybrid and pure OA). The first thing I checked was the average APC for hybrid vs pure OA<div>
<br><a href="https://plus.google.com/+DavidRoberts/posts/NkCAzmhpci1">https://plus.google.com/+DavidRoberts/posts/NkCAzmhpci1</a></div></div>