All4Cellular offers the Wooden Bamboo Case for Apple iPhone 4 / 4S in four styles for $6.95 with free shipping. That's tied with last month's mention and the lowest total price we could find for any similar case by a buck, outside the mention below. It's purportedly made from 100% natural materials. Deal ends November 18.

A close price: Boho Tronics via Amazon has a similar model for $6.43 plus 57 cents for shipping.