For in-store pickup only, Micro Center offers the Trendnet AC1200 Dual Band 802.11ac Wireless USB Adapter, model no. TEW-805UB, for $15.99. That's a buck under our mention from last fall and the lowest price we've seen. (It's also a current low by $8.) It features support for wireless encryption up to WPA2-RADIUS and data transfer speeds of up to 867Mbps.