There is wholesale pricing on Apple devices. How else could a store make money on them? Stores don't buy stock directly from Apple; they buy through an authorized distributor.

P.S. In case it wasn't clear to you, Apple devices cost the same from anywhere. That makes them a good example here.

Here's $329 for a mini at Apple.com: http://store.apple.com/us/buy/home/shop_ipad/family/ipad_min...

And here's the same price at Walmart.com: http://store.apple.com/us/buy/home/shop_ipad/family/ipad_min...

Walmart makes a profit because they bought the mini at a wholesale price from an Apple distributor.