As one of its daily deals, Amazon offers Prime members the Omron 7 Series UltraSilent Wrist Blood Pressure Monitor, model no. BP652N, for $39.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.25.) That's the lowest total price we could find by $13. It features an irregular heartbeat detector, silent inflation, and blood pressure indicator with advanced averaging. Deal ends today.