Botach via eBay offers the Smith & Wesson Tactical Pen and Knife Combo Pack, model no. SWPROM-14-8CP, for $19.99 with free shipping. That's tied with our mention from two weeks ago, $60 off, and the lowest total price we could find. The knife features a partially-serrated blade, while the pen features a replaceable stylus tip and pocket clip.
Update: As a reader has discovered, 13 Deals offers this item for $18.49 with free shipping.