Amazon offers its Amazon Prime members the Griffin USB Mini-Cable Kit, model no. GC17097, for $13.69 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $8.06.) That's $1 under our mention from a week ago and the lowest total price we could find by $1. This mini-cable set includes a dock cable for iPhone / iPod, USB mini adapter, and USB micro adapter.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months. (Note that currently there's a waitlist for Amazon Mom.)