Amazon offers Prime members the Trendnet AC1750 802.11n Dual Band Wireless Router, model no. TEW-812DRU, for $36.40 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $9.13.) That's $7 under our September mention and the lowest total price we've seen. (It's the best deal now by $15.) It features dual wireless bands, four Gigabit Ethernet ports, and up to 1.75Gb/s wireless data transfer rate.

Update: The price has increased to $40.28.