Newegg offers the refurbished Roku Streaming Stick, model no. 3500R, for $34.95 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find for a new one by $5. It plugs into your TV's HDMI port and streams 1080p video via WiFi.
A 90-day warranty applies, although it's unclear who backs it.