Today only, Chitek offers the Acase Superleggera PRO Dual Layer Case for Apple iPhone 4 / 4S in Black for $12.95. Coupon code "3GMQRJSN" cuts it to $5.95. With free shipping, that's $7 off, tied with our mention from a week ago, and the lowest total price we could find. This case fits the iPhone 4 / 4S for AT&T, Verizon, and Sprint.