All4Cellular offers the refurbished Alltel Wireless Huawei 3G AirCard USB 2.0 Modem, model no. EC168, for $19.95. Coupon code "SAVE20" cuts it to $15.96. With free shipping, that's $4 under our mention of a refurb from three weeks ago and $30 below the lowest total price we could find for a new one. With an appropriate data plan, this modem allows you to connect to the Internet over cell phone towers. Deal ends April 16.

A 90-day All4Cellular warranty applies.