Mota Corp. via Amazon offers its Mota Slim Armor Case for iPhone 6 in Gray, Pink, or Navy, model no. MT-I6PC4, for $1.99 with free shipping. That's the lowest total price we could find by $4. It's designed to be shock-absorbing, shatterproof, and scratch resistant.

It's also available for the iPhone 6 Plus in four colors, model no. MT-I6PC5, for $2.99 with free shipping. That's the lowest total price we could find by $2.