Best Answer: Amazon Halo is a brand new service from Amazon that aims to bring customers comprehensive personal health and wellness monitoring, as well as advice. Halo works with the new Amazon Halo Band, which is currently only available through Early Access, and it costs $65 ($100 after Early Access.) It includes a six-month trial of the Halo service. After the trial period, Amazon Halo costs $3.99 a month plus tax. The Halo service is optional, but it makes the most out of the Halo Band and smartphone app.A healthier path: Amazon Halo Band ($65 at Amazon)