As a former science teacher, I thought these kits were pretty cool for the most part. After a year however, my son was no longer interested in them. Their autorenewal policy is NOT transparent, there is no reminder email sent ( although I received tons of other emails). I cannot cancel after they just charged my credit card for another $235. I will NOT recommend them to another parwnt or teacher, and will in fact ( as I just did) warn people away due to this shameful business practice. Really leaves a bad taste in my mouth.