Will there ever be a sale?

Nope. I believe that my libraries are fairly priced to begin with and that offering them at a disounted price some time after the release wouldn’t be fair for early adopters. The only chance to get a library on a discounted price is during the intro sale. If you want to know more about the pricing philosophy, please, see this article.

If you’re a student or teacher, I’m happy to offer you an edu discount.