Electronica Direct via Amazon offers Prime members the refurbished Linksys Ultra RangePlus 802.11n 4-Port Broadband Router, model no. WRT160N, for $19.99 with free shipping. (Non-members can get free shipping on orders of $25 or more; otherwise, shipping adds $8.93.) That's $7 under our April mention of a refurb and $7 less than the lowest total price we could find for a refurb today. (It's $37 under a new unit today.) This router uses MIMO technology with multiple radios for improved signal strength and range.

No warranty information is provided.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.