Hi there, happy to hear the product is working for you. We are happy to assist you. Our subscription model makes sure our customers do not run out of product by shipping every 4 weeks and also receive our subscription discount of 15%. As you will see on the order page on Neurohacker.com, subscriptions offer 50% off of your first order, and 15% each order thereafter. This is to allow customers to try Mind and see if it is the right fit for you and your individual biochemistry. Please reach out to our support team at support@neurohacker.com if you need further assistance.