Mwave offers the PowerLink 150Mbps 802.11n Wireless USB 2.0 Adapter, model no. PL-14N, for $19.99 with free shipping. That's tied with our January mention and the lowest total price we could find by $6. It features a max speed of 150Mbps, dual 7dBi dipole antennae, operating distance of up to one mile, purported 6x signal strength, and support for WEP, WPA2, and WPA-PSK encryption.
Mwave offers the Premiertek 2.4GHz Screw-On Swivel WiFi Antenna, model no. ANT-9dBi, for $7.99 with free shipping. That's tied with our mention from three weeks ago and the lowest total price we could find by $8. This omni-directional antenna attaches to the external antenna connector of a router and has a frequency range of 2,300-2,700MHz and gain of 9dBi.