Amazon offers the Irwin Tools Folding Utility Knife, model no. 2089100, for $9.88. In-cart, the price drops to $7.90. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $5.10.) That's the lowest total price we could find by $7. It features an anchored belt clip, wire stripper, and quick change button. Deal ends December 31.