I just picked up a sixer of these guys at the local Walmart a couple weeks ago. That half gallon size is nice!!WalMart shows a case of 6 - 1/2 gallon jars for $14.00.
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For ~$60, you can get 4 of those cases. 24 lids to pop off when you burp 'em is better than 50 lids. And each 1/2 gallon jar filled to about 3/4 full will hold just a nose under 3 oz.