When searching for canning jars on sale, check Kmart, Walmart, Target, Big Lots, and big grocery stores (in addition to yard sales, craigslist, freecycle, estate sales, and friends that have stopped canning.) Big Lots sells the brand Golden Harvest, which are good canning jars. Walmart sells Mainstay jars which are okay for waterbath canning, but not for pressure canning- the jars tend to break or lose their seals. Right now, Kmart is having sales on jars, as is Big Lots. Walmart will match Kmart's prices, but may limit the amount.

Remember, when buying jars from used sources, run your finger along the lip of the jar to make sure there are no chips or cracks. Always use new lids when canning, unless you're using Tattler lids. Go forth and can!