This bundle is available for $3.99 USD as a box set directly from Kobo.
When you purchase from Kobo the box set will be automatically delivered to your Kobo ereader or Kobo app.
You can purchase this box set for $3.99 USD at Amazon.
Amazon will automatically deliver the box set to your Kindle ereader or Kindle app when you buy from Amazon.
The box set is available for $3.99 USD at Barnes & Noble.
Barnes & Noble will deliver your purchase directly to your Nook ereader.
For $3.99 USD you can purchase this bundle as a box set from iBooks.
Apple will deliver your purchase directly to your iPhone, iPad or other Apple product capable of running iBooks.