Tdbest via Amazon offers the Tdbest Folding Box Cutter Utility Knife for $11.99. Coupon code "YRQRWG8T" cuts it to $7.91. With free shipping for Prime members, that's a buck under our July mention, $4 off list, and the lowest price we could find. It features a lock back design and comes with 11 replacement blades. Deal ends October 13.