Estate sales are good, older generation LIVED on home canned food, and never got rid of most of it, I've bought boxes on estate auctions for $1...One time they sold 15 or 20 boxes of jars, sold by the box until everyone quit bidding, then sold the rest for $1. Lots of times they come with the rings, and with lids that were past their prime 30 years ago. I do think more people are realizing the value of preserving your own, so I don't think the deals are as common now...

I've got the pressure canner that Grandma used when my Mom was a girl. You can still buy one just like it, I've replaced the seal and pressure popoff for safety, but works great.