Vista Distributing via Amazon offers Prime members the DirectTV DECA 2 Ethernet to Coax Adapter Kit 2-Pack for $13.50 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $9.36.) That's the lowest total price we could find for this quantity by $16. It converts coax cable to a home network and can replace a Cinema Connection Kit.