Today only, SharkStores offers the Body Glove Snap-On Case for iPhone 4
in Black for $9
for shipping. That's the lowest total price we could find by $5, outside of the deal below. Features include a hard outer shell, adjustable kickstand, and lanyard. It's compatible with both AT&T and Verizon iPhone 4 models.
A close price: Cell Lounge via Amazon has it for $11.95 with free shipping.