Do you know the cost of apples?

If you were ever in doubt just how desirable some tech gadgets are, this should put it beyond doubt.

While it seems that UK teenagers have little clue about the cost of humble everyday staples like a pint of milk, 80 percent can reel off the exact prices of the iPhone 4 (both the 8GB and 16GB versions) as well as the cost of iPads and Sony PS3s.

However, are adults actually any different?