Although I was hesitant to purchase the Keto Mojo GK+ it was an investment well worth making. Sure, the monitor is easy to use and the app is clear and easy to use even for a senior like myself, but most importantly I can actually see concrete results from changes in my diet. Before I was just assuming I was in Ketosis, now I have verification of the level of ketosis my diet is achieving. Secondly, I was very concerned about my Glucose levels. I recently had my blood work done and my fasting glucose was at 121 after almost a year on the Carnivore diet. With careful monitoring of my food selections and ratios, I consistently test at sub 100 levels of glucose. How much did I pay for this Keto Mojo kit? I don't remember and honestly, don't care. The information I have gleaned from this monitoring is invaluable.