The FitBit Zip in the Grey color drops from $59.99 to $39.99 when you add it to your cart at Target.com. This is the lowest price we could find for the FitBit Zip by $10. The Zip tracks and display your steps taken, distance traveled and calories burned in real-time on its LCD screens and can wirelessly sync to your computer or smartphone to upload your data to the Fitbit app. Sales tax is charged in most states.