There is always the option to make your own A/C plumbing with braided lines and connectors without any special tools. Granted, the connectors are expensive, but so is the tool. If you make hoses for a living, then it's probably worth investing in a tool, but for a single (or even two) cars, making your own braided lines does make sense. Just my two cents (Canadian). 😉
Here are a couple of pics from my 83 GP:
Here are a couple of pics from my 83 GP: