So Speck's website sells the case for $29.95. (https://www.speckproducts.com/iphone-case/iphone-4-case/pixelskin-hd-for-iphone-4s.html) But Amazon seems to have the black version for $14.94. (http://www.amazon.com/gp/product/B005T0DUQ2/ref=noref?ie=UTF8&s=wireless&psc=1) The other colors vary in price slightly. But they all say "ships from and sold by Amazon.com," so it should be legit right? Why such a price discrepancy?