Yichengjin via Amazon offers the Soufull Professional Knife Sharpener for $15.88. Coupon code "cmdq1270" cuts it to $12.70. Plus, Prime members bag free shipping. That's a buck below our mention from last week and the lowest price we could find by $6. It features a 2-stage sharpener (coarse and fine) and non-slip base. Deal ends January 31.