B&H is almost always the best place to buy mac accessories. I was quite surprised to find that out
That's because you don't live in NYC.
I run in to weird stuff like that from time to time. A few years back I bought a new (Canon PowerShot S3IS) digital camera... from DELL. *shrug* $260 instead of $399 iirc. No idea why. Did not care.
I work for the Department of Redundancy Department