I'm a SymPy developer, but I'd probably pay $15/year just to test different things so I could compare results. I won't pay $15/month, though. Especially since o

I'm a SymPy developer, but I'd probably pay $15/year just to test different things so I could compare results. I won't pay $15/month, though. Especially since other developers have access to it, mainly through their university.