eXpansys offers the Amzer Organics Case for Apple iPhone 5 in Black, model no. AMZ94810, Slate, model no. AMZ94809, or Sand, model no. AMZ94808, for $10.99. Coupon code "AMZER15" cuts it to $9.34. With $3.99 for shipping, that's the lowest total price we could find for this case by $2. This case is purported to be 100% compostable and biodegradable.