Skiva 3-Foot Flat Lightning to USB Cable for $10 + free shipping via Prime
Skiva via Amazon offers its Prime members the Skiva 3.2-Foot Apple-Certified Flat Lightning to USB Cable for $9.99 with free shipping. (Non-members can spend $35 or more to bag free shipping; otherwise, it adds $8.07.) That's $26 off list and the lowest total price we could find for such a certified 3-foot flat cable.
3 very similar deals were also reported by some other sources: