TigerDirect offers the Munitio Billets Call of Duty 9mm Headphones, model no. CPFA000334-001, for $9.99 plus $1.99 for shipping. That's the lowest total price we could find by $5, although we saw it very briefly for $2 less on Black Friday (since expired). They feature in-line mic control, neodymium drivers, gold-plated 3.5mm jack, carrying case, and more.
Munitio Call Of Duty: Modern Warfare 3 Billets 9mm Special Edition Earphones is also available at these stores