Sightbox is a a very different offering from Hubble. A Sightbox membership is a 12-month commitment, and your membership includes the comprehensive eye exam (we schedule it for you at a well-reviewed eye doctor in your area and then pay for the exam ahead of time), and a 12-month supply of whichever name brand contacts your doctor prescribes. Hubble is a manufacturer of contacts, they do not have anything to do with your eye exam, and they only have one type of contact technology available (Methafilcon A). It might be helpful to think of Hubble as a manufacturer of one type of lens and Sightbox as an alternative to vision insurance, but built specifically for contact lens wearers.
You can read more about how Sightbox is different in this blog post.
Read this article to see how Sightbox is different from online retailers.