Walmart offers the Apple iPhone 5s 16GB Prepaid Smartphone for Straight Talk in Space Gray or Silver for $149 with free shipping. That's $301 off and tied with last week's mention as the lowest total price we've seen for the Straight Talk version of this phone in any condition. It features a 4" 1136x640 Retina display, 8-megapixel rear camera, front camera, 1080p HD video recording, Bluetooth, WiFi, and iOS 7.