BetterBasics via Amazon offers the Sterline Adjustable Stainless Steel Mandoline Slicer for $13.59. Coupon code SLICES12 cuts it to $11.96. Plus, Prime members receive free shipping. That's the lowest price we could find by $3, although we saw it for $3 less in January. It features an adjustable cutting size from 3mm to 9mm. Deal ends May 15.

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