April Showers bring May Flowers. Well, it's not rained much here and it's not scheduled to for a while. But while water isn't falling from the sky, PDFs are. Paizo is running their April Showers sale for all their digital products over in their webshop.
From the website:
All Paizo PDFs and digital products are 25% off through Sunday, May 2nd! Just click on the “On Sale” tab in your favorite sections of the Paizo Store and add it to your cart.