Hello
I find the SageMath project great, being able to share code (that everyone can run) and mathematical ideas with everyone. This is not the case with Matlab-style classic mathematics software. Now I suspect that this has a cost, (financial aid for developers and computer cluster). Personally I am ready to participate, financially because I do not have computer skills. By cons I find a little expensive $ 14 per month, I want to give a little, say 20 or 30 dollars from time to time. Also why not put a donation button on SageMath.org?
A big thank you to all the developers of this wonderful SageMath math software. This software is my happiness
