Shnoop offers the Clip-On Butane Cigarette Lighter 10-Pack in Silver or Green for $9.99. Coupon code "BUTANE" drops it to $7.99. (Amazon has it for the same with free shipping.) With free shipping, that's $37 under the lowest total price we could find for 10 similar lighters elsewhere. These refillable lighters feature a metal clip and an adjustable flame.
Note that this 10-pack will ship in random colors. Additionally, they'll arrive empty; you'll need to fill them with butane.