Ok, I have been dropping a lot of money on humble bundles, but that's because they have really good ones!

Chronicle Books Bundle: Start something new - includes stuff like How to Build A Hovercraft, Master the Art of Chinese Cooking, etc.

Home Sweet Home Quarto Books - tons of gardening books, Learn to Weld, Ultimate Slime

Be the Change - Parable of the Sower graphic novel, Black Women in Science, various activist books.