The cost of the refrigerant is based on the type of refrigerant that you need, and how much you need. This can vary widely depending on the brand and size of your system. At Absolute Refrigerant, they offer R22 at a very affordable price with fast shipping. They offer several different sizes including: R-22 5 LBS Refrigerant – $299.00 R-22 10 LBS Refrigerant – $449.00 R-22 20 LBS Refrigerant – $659.00