Amazon offers its Prime members the Griffin USB Mini-Cable Kit
, model no. GC17097, for $12.92
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 January mention and the lowest total price we could find by $2. 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.