Mwave offers the Premiertek Outdoor 24dBi Super High-Gain Wireless Antenna, model no. ANT-GRID-24dBi, for $39.99 with free shipping. That's tied with our mention from two weeks ago as the lowest total price we've seen. (It's a current low by $4.) This antenna has a frequency range of 2.4GHz to 2.48GHz and gain of 24dBi.