If someone knows how to make a product for $30 that the competition charges $300 for, why not go into business and undercut their price by a huge margin? Millions of users' lives would be instantly improved with dramatically cheaper epipens. That will do far more to combat greed than a blog post.

However, I think that if someone were to try this, they'd find there are many more costs involved than the raw ingredients and it might not be quite so simple to massively undercut the competition. But still, they should go for it! Competition is is the best medicine for over priced goods.