You don't even have to worry about recycled R12. It's still produced in mass quantity in China and parts of Europe.

It's easy enough to get, I've never had any problem ordering it online with a simple sales tax license. Just order it "for resale", report it on your ST return, and then "sell" it to your mechanic for $1. You get a tax loss, and the transaction is perfectly legal and doesn't require a refrigeration license to complete the order (at least in my state).

If you were less ethical, you could of course just recharge your own car with it. While technically illegal, I doubt the EPA has any spies in the bushes in your back yard watching you. The chances of getting caught would be zero. IME, the rules/restrictions on this stuff have become less restrictive over the past several years, mainly because people have figured out ways around things. It's almost back to how it was in the early 1990s before R12 became a real hassle.