Kmart discounts a selection of Ball mason jars, with prices as listed below. Opt for in-store pickup to dodge the shipping fees. The deals, with prices compared to what you would pay in-store elsewhere:
With orders of $25 or more, Amazon offers the Ball Regular Mouth Jar Lids 6-Pack in Blue for $2.50 with free shipping. (Non-members can spend $35 or more to qualify for free shipping.) That's the lowest total price we could find by $3. This set includes six lids with matching bands.
Note: This item is part of Amazon's "Add-on program" and can only be purchased with an order of $25 or more.