REI Garage offers the Sigma Sport Rox 5.0 Double Wireless Cycling Computer for $49.73. Pad your order over $50 to bag free shipping; alternatively, choose in-store pickup to dodge the $5.99 shipping fee. That's tied with last month's mention, $50 off list, and the lowest price we could find. It displays multiple speed, heart rate and (optional) cadence values, and features four target zones, intensity zones, and an alarm.