mwave offers the Premiertek Outdoor 24dBi Super High-Gain Wireless Antenna, model no. ANT-GRID-24dBi, for $42 with free shipping. (Buy.com has it for a few cents more.) That’s $1 under our February mention and the lowest total price we could find by $4. This antenna has a frequency range of 2.4GHz to 2.48GHz and gain of 24dBi.