ThinkGeek.com offers this Withings WiFi Body Scale (WS-30) for $79.99 plus free shipping after coupon code: PREPNOW (Exp. 10/17) is applied at checkout. Sales tax in most states.

Why this deal is hot:
You save $20 off the retail price. This is the best deal found on this weight scale.
Features 802.11g / Free service links your scale to the internet / iPhone/iPad compatible / Multiple users / Graphical outputs / Great tool for staying motivated!