iTech Deals again offers this 3-Foot 8-Pin Lightning to USB Sync & Charge Cable 3-Pack for $5.99 with free shipping. (You'll find it in the top-right corner of the page.) That's $2 per cable, tied with last week's mention, and the lowest total price we could find for this quantity by $6. These cables will work with any Lightning-equipped Apple device.
Update: Even better, Tanga has them for $4.90 with free shipping.