I have a question for those that can their own produce: Do you reuse the lids? Not many years ago they were considerably less expensive and not much thought was given to tossing the used lids and purchasing new the following year. I know the universities and manufacturers suggest we follow this mindset but for probably 10 years I've refused to follow their instructions and after careful inspection of the lids if they pass my eye test they get reused, and many have been reused up to 3-4 times with no adverse effects. If the rubber is in good shape and and the enamel show no flaws they are good to go in my book. My wife generally pops them off the jar with a can opener and even the bent edges on the outer side of the metal can be reformed by rolling them on the countertop. They now offer reusable lids but the price limits me from investing (with my labor) an end product that is available on the shelf for less. Besides controlling what goes into the jar my reason for canning has been for economics. Even with using new lids occasionally a jar doesn't seal properly and gets regulated to the fridge for immediate use so what am I missing?
I would probably reuse because I'm cheap and play fast and loose like that. My husband is an engineer and handles all the actual canning. And he does not reuse.