Groupon offers the Weight Gurus Smartphone-Connected Digital Bathroom Scale in Clear, model no. 0358, for $16.99 plus $3.99 for shipping. That's lowest total price we could find by $9, and the second-best price we've seen. (However, we saw it for a buck less last week.) It features an LCD screen, iPhone or Android app, auto user detect for up to eight users, four sensors, and 400-lb. capacity.