With orders of $25 or more, Amazon offers Prime members the Reese's Pieces Peanut Butter Candies 1.53-oz. 18-Pack for $6.50 with free shipping. (Non-members can spend $35 or more to qualify for free shipping.) That's $0.36 per bag, tied with last week's mention, and $12 under the lowest total price we could find for this quantity elsewhere.

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Note that this item is part of Amazon's "Add-on program" and can only be purchased with an order of $25 or more.