I bought this Leaksaver Ultimate Sealant, Dryer and Detector directly from the Leaksaver website last August because my A/C had a leak in the condensor. I decided to replace the entire HVAC system so I never used it. It is brand new in the original sealed packaging. Here is information on this product on the Leaksaver website -
https://www.leaksavers.com/products/direct-inject-ultimate-3-in-1
It typically sells for $45 plus tax and shipping.