The Fitbit Flex Wireless Activity + Sleep Wristband drops from $99.99 to $81.75 when you get it along with 2 other accessories priced $5 or less at AT&T. Plus, the shipping is free. This is the best price you can get this bestselling fitness tracker for by $6 for the black color and $19 for the blue color. In order to get the discount, add the Fitbit to your cart and on the next screen, when it asks you to add additional accessories, sort by "lowest price" and add any two $5 items to your cart. These trackers monitor and record your daily activities including: steps taken, distance, sleep patterns and calories burned. it also has a built-in silent alarm and LED goal lights. Sales tax is not charged in most states.