At BestBuy.com, you can get $30 off when you buy a Fitbit Flex or Fitbit One Activity and Sleep Tracker together with a Fitbit Aria Wi-Fi Smart Scale. Follow the instructions on the page to get the discount. Combined this is the best deal we found for both items by around $15. The wristband tracks your activity and sleep patterns and the scale measures weight, body fat and body mass index and can track your results over WiFi. Shipping is free and sales tax is charged in most states.