We got 6% from Springer for a textbook (6% total split between the authors, not per-author) [1]. However we were first-time authors, and also insisted that we

We got 6% from Springer for a textbook (6% total split between the authors, not per-author) [1]. However we were first-time authors, and also insisted that we be allowed to leave the "author version" PDFs online as open access [2]. So it's possible the lack of a fully exclusive contract made our royalties lower. [1] https://www.springer.com/us/book/9783319427140 https://www.springer.com/us/book/9783319427140 [2] http://pcgbook.com/ http://pcgbook.com/