With orders of $25 or more, Amazon offers Prime members the Pentel GraphGear 500 Automatic Drafting Pencil, model no. PG525A, for $3.33 with free shipping. (Non-members can spend $35 or more to qualify for free shipping.) That's $6 under our mention from five days ago and the lowest total price we could find by $4. It features a beveled barrel and metallic mesh grip.

Note that this item is sold as part of Amazon's "Add-on program" and can only be purchased with an order of $25 or more.