Hi guys, I bought a Speck Candyshell case for my iPhone 5 today. It was £8.99 from a market store inside my local shopping centre. They seem official and they've been selling tons of cases for years there, which is why I decided to buy one. I'm just a bit concerned I've been sold a knock-off considering how low the price is. It seems like the real deal, and feels fairly robust. What do you guys think?