There is a figure that is unbelievably clear and efficient in getting my point across. More specifically, I'm doing a presentation about modeling a certain real-world object to math students who are not familiar with the problem, and the figure beats any sort of clumsy explanation I can give. Nor is there any chance of me 're-imagining' the figure, or drawing from another example.
Now, asking for the rights to reproduce the figure will cost around 70euros (I study in Europe, the journal is Nature Computational Science). Are there any benefits given to students to get around this issue? Also, the presentation is only to ~40 students in my university, and the slides won't be public, so perhaps this may be another way out?
I've seen this, does my use case fall under fair use?