View on LOZ Suggested Retail: $274.95. Ninja K32014 Foodi NeverDull Premium Knife System, Knife Block , 14 Piece Set, Stainless Steel/Black. Introducing the Ninja Foodi NeverDull Premium Knife System, the premium knives that stay razor-sharp for over 10 years. This versatile set includes forged German stainless steel blades that are durable and perfectly balanced for comfort and control. With only a few swipes of the built-in, foolproof sharpener, this all-in-one system maintains the superior sharp edge you crave use-after-use.. 7 CALENDAR DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.