All4Cellular offers this Screenshot Illusion Case for iPhone 4 and 4S in Purple/Black for $1.95. Coupon code "SAVE20" cuts it to $1.56. With free shipping, that's pennies under our mention from a month ago and the lowest total price we could find by $1. This back cover features an iPhone front "screenshot". (It's for protection — keeps other smartphones from sneaking up on your iPhone.) Deal ends April 16.