ChiTek offers Amazon Prime members the Acase Superleggera Case for Apple iPhone 4 / 4S in Red for $12.95. Coupon code "R9NLZBRJ" cuts it to $5.95. With free shipping, that's $7 off, a few pennies under our expired mention from two days ago in black, and the lowest total price we've seen for this case. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.29.) It claims to fit all iPhone 4 / 4S models. Deal ends November 20.

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.