Best Buy offers the Speck CandyShell Grip Case for iPhone 6 / 6s in Black/Grey for $7.99 $6.99 with free shipping. That's the best we've seen and the lowest total price we could find now by a buck, although most retailers charge over $35. This military-grade, drop tested phone case features a raised bezel and rubberized button covers.

Of note, Amazon has it for the iPhone 6 Plus in Black/Slate Gray for $9.99 with free shipping for Prime members. That's a low for this model by $30.