Cheapest price by far that I've seen for this dual band Wireless AC adaptor. I'm guessing amazon are simply price matching Argos!
Dual-band connections for lag-free HD video streaming and gaming
Speed USB 3.0 port - up to 10 x faster than USB 2.0
Equipped with a USB extension cable for flexible deployment
Easy wireless security encryption at a push of the WPS button
Maximum speed up to 5 GHz, 867 Mbps or 2.4 GHz, 300 Mbps