Staples offers the BIC Mechanical Pencils 24-Pack with assorted colorful barrels in .5mm, .7mm, or .9mm for $5. Plus, Staples Rewards members qualify for free shipping. (Not a member? Click here to sign up for free.) That's 21 cents per pencil and the lowest total price we could find by $2. BIC indicates that each pencil delivers the write-out equivalent of 2-1/2 wooden pencils.