"How to Draw Cool Stuff" Kindle eBook free

Amazon offers How to Draw Cool Stuff: Shading, Textures and Optical Illusions Kindle eBook for free. That's $19 less than the lowest price you'd pay for it in print.

They also offer How to Draw Cool Stuff: A Drawing Guide for Teachers and Students Kindle eBook for free. That's $17 less than what you'd expect to pay for it in print.