Tanga offers this 10-Foot Lightning to USB Charging / Sync Cable for Apple iPhone 5, iPod touch, and iPod nano for $4.99 plus $3.99 for shipping. (IDS Online Shop via Amazon charges the same.) That's the lowest total price we could find for such a cable in this length by $11, although it was a buck less last week (since expired).

Of note, you can add two to your cart for $9.98 plus $3.99 for shipping ($6.99 each).