My mom works for a hardware distributor (they sell to hardware stores). So I usually get my jars through her at a wholesale price. About $6 per case. More often than not, she doesn't let me pay for them and says that I can just give her a couple jars of whatever I make (yeah, because I wouldn't give her jars anyhow
Silly mom!) I hunt craigslist often too. Haven't found much this year, but I scored really big last year! All my coupons have now expired...didn't get to use that many because they didn't go on sale. At least I saved more than I paid for them.