They emailed me back right away. Here is their response.
Thank you for contacting Learning.com! Aha!Science is $15.00 per license per user and can be purchased through our Marketplace. In order to access our Marketplace you can sign up for a free teacher account, please follow the steps below:
Go to our webpage, www.learning.com
Hover your mouse over “Tools†towards the top of your screen Click on Marketplace for Teachers Click the blue “Sign Up†in the upper right hand corner Follow the steps to sign up for a free teacher account – since you’re a homeschool teacher, you can make up your district but please put in the proper state you are in since some of our content is state-specific by standards
After your account is created, click on the Marketplace icon in the upper part of your screen and browse all of the free and fee-based content. To find Aha!Science you can browse by provider, click on Learning.com in the drop down menu and then find Aha!Science on the list of Learning.com curriculum.
They emailed me back right away. Here are the instructions, only $15 per user, per year.