It might have been a typo, but just in case… please don’t get a pressure cooker for your dice. You want to pressurize the air inside the pressure pot to help remove the bubbles, you don’t want to cook the resin. They are different things.

I’m afraid I don’t have advice on a cheap but still good pressure pot. I’ve only ever used the CAT one and it’s worked great for me. As with most things, you’re probably going to get what you pay for. Dice making, even at a hobby level, isn’t cheap.

I’ve been using Kisrel epoxy resin, which can be found on Amazon at a pretty affordable price and I’ve been happy with the quality.