ZyXEL PLA4215KIT 500Mbps Powerline Gigabit Ethernet Adapter (Pair) for $93.99 shipped after coupon code EMCYTZT2388.  Here is a screenshot for your reference.  The set comes in a pair and uses gigabit Ethernet to achieve up to 500mbps transfer speed. Most places have the Gigabit Ethernet adapter for over $105.