BetterBasics via Amazon offers the Sterline Adjustable Stainless Steel Mandoline Slicer for $27.99. Coupon code "MSLICE20" cuts it to $22.39. With free shipping, that's tied with our mention from three weeks ago and the lowest price we could find by $8. It features an adjustable cutting size from 3mm to 9mm. Deal ends November 18.