My experience is with various graphic designs, from the big and simple to the small and complex.
In terms of animation, I've primarily done 2d sprite animation, but other forms of 2d animation are open to me as well. 1 minute shouldn't take too long, so 250$ seems to me a reasonable fee for a simple 1 minute animation.
As a student, my primary goal is to expand my portfolio, whilst putting any funds earned toward my fine arts education. As such, I will request that I am allowed to display the completed work in my portfolio, but will not require a particularly high budget.