These are usually included on server grade boards, and even some of the consumer grade stuff out there now, and it's less expensive than than the cost of Apple's replacement parts, even from 3rd party locations such as macpalace. 😱 😉
Dude!! You dont want the 200% apple tax on those things!! 😀
I sure as hell would want them if the box would stay at the same price,but apples strategy has been "Remove one,double the price".
And Apple's already done this, except for a Blu Ray drive. Think about the 24" LED Cinema Display, and even previous systems (MP's + laptops). 😛