Best Buy offers the Withings Body Composition WiFi Scale in Black, model no. WBS05, for $77.97 with free shipping. That's $19 under our August mention and the lowest total price we've seen. (It's the best price we could find today by $32, outside of the deal below.) It measures BMI, body fat, muscle, bone mass, and water.

A close price: Amazon has it in White for $79.99 with free shipping.

Update: The price at Amazon has dropped to $77.97 with free shipping.