Ha. Amazon do keep all the stuff. If you can afford daft prices.
https://www.amazon.co.uk/WINOMO-Conditi ... 56&sr=8-10 Connecting hoze and a guage (very fancy, no gauge needed.)
Heres the 134A gas that almost all modern cars use. No CFC worry. So releasing from your car also no worry.
It is rediculously priced buying it like this though.
https://www.amazon.co.uk/Aircon-Conditi ... 156&sr=8-9About 5 or 6 times cheaper to buy or rent or "aquire" a big refillable bottle. I used an old CO2 fire extinguisher/nitrous bottle and just bought the gas on my local undustrial estate at around 10 uk pounds for a 8lb fill. Use propane if you want. Its basically the same thing as far as the air con is concerned. Dont use that on an indoor system, if it leaks it may make an explosive atmosphere. Anyway its all worth knowing.
They also do a leak sealer (just same 134a with a little proplene oxide added to swell rubber seals)
https://www.amazon.co.uk/Aircon-Conditi ... ay&sr=8-11If you are a cheapskate, you can just top up whats already in there till it begins to work. Then add a LITTLE more. And stop. So you may only need 1 can. But 3 is almost the same price.