Apple (AAPL) added hi-def movie downloads to its iTunes store yesterday. The selection is pretty limited, but that'll improve over time.

 

But at $19.99, are they cheap enough to drive meaningful sales? In most cases, especially for big hits, they're 17% to 33% cheaper than hi-def Blu-ray discs, especially at Best Buy (BBY), and even at Amazon (AMZN), where prices tend to be lower. But in other cases, we're finding Blu-ray discs cheaper on Amazon than iTunes...

 

http://www.businessinsider.com/apples-hd-movies-usually-cheaper-than-blu-ray-2009-3