Since the iPhone 6 and 6 Plus start shipping September 19th, this is a great time to pick up an iPhone 5S at a deep discount. A 16GB iPhone 5S on contract with AT&T, Verizon, or Sprint is on sale at Target (in store) for $99. The Target Cartwheel app also has a 25% off on-contract iPhone 5S. Put those together and you're looking at $75 plus tax for an iPhone 5S with a two-year contract. Not too shabby if you are in need of an upgrade.