CTCStore offers Amazon Prime members the Acase Superleggera Case for Apple iPhone 4 and 4S in Red for $14.95. Coupon code "AIKKELU6" cuts it to $5.95. With free shipping, that's the lowest total price we could find by $7, although we saw it for a buck less three weeks ago. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.02.) Deal ends January 29.

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.)