All4Cellular offers the Tech21 iBand D3O Shell Case for Apple iPhone 4 or 4S, model no. T21-1170, for $1.95. Coupon code "a4c50off" cuts it to 97 cents. With $2 for shipping, that's $2 below our March mention and the lowest total price we could find by $1. This rubber and plastic case absorbs shock and impact and protects from drops and scratches. It also allows access to all ports and buttons. Coupon expires October 31.