ChiTek offers Amazon Prime members the Acase Superleggera Case for Apple iPhone 4 / 4S in Black for $7.99. Coupon code "VKKSJD23" cuts it to $5.99. With free shipping, that's $1 under yesterday's mention (which also included two screen protectors, since expired) and among the lowest total prices we've seen for this case. It's also a current price low by $7. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.01.) It claims to fit all iPhone 4 / 4S models. Deal ends November 21.

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.