Tanga offers this iPhone 4 to iPhone 5 Dock Charger Adapter in White for $6.99 plus $3.99 for shipping. That's tied with last week's mention and the lowest total price we could find for a comparable item by a buck. (Meanwhile, Apple charges $29 for its model.) This Apple Lightning-to-30-pin adapter is also compatible with select iPad and iPod models. It's available in short or 17cm corded sizes.