Tom, for me to make a specific comment about your gift, and just how valuable it was, you need to be provide more details about it. What did you give away? Were those limited editions of your prints? Are you otherwise selling them? For how much? What was the cost to you? What role did it play in the students education?
The very act of giving away to those who really need it is, of course, highly commendable. But we are talking about how valuable it is, or how valuable it is perceived to be, and the degree of it. And that depends on context and many other factors.