I would jump on this opportunity because they don't give discounts like this often!
For those of you who are not familiar with Kiwi Crate here is a description from their site:
Kiwi Crate is an award-winning, monthly subscription service that provides all the hands-on materials to inspire creative, educational fun. With themes like Music, Color, Robots, and Safari, these crates deliver everything needed for unique activities that you and your kids can enjoy together. see sample crates ››