CTCStore offers Amazon Prime members the Acase Superleggera PRO Dual Layer Case for Apple iPhone 4 and 4S in White/Black for $12.95. Coupon code "S3DCM8RC" cuts it to $5.95. With free shipping, that's tied with our expired mention from three weeks ago and the lowest total price we could find for this case. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.05.) It fits the iPhone 4 / 4S for AT&T, Verizon, and Sprint. Deal ends December 24.

Need it for Christmas? Choose 1-day shipping for $16.19 and place your order by December 22 at 7:30 pm ET for guaranteed delivery. 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.)