As with everything Apple will require it's users to pay $750 for their own SSD or to buy special parts if they decide to get their own SSD.
http://www.engadget.com/2010/07/29/imacs-latest-27-inch-iteration-requires-special-parts-for-your/
They way I see it, if you pay $1700 for a brand new computer you should be able to easily add/replace the Hard Drive
http://www.engadget.com/2010/07/29/imacs-latest-27-inch-iteration-requires-special-parts-for-your/
They way I see it, if you pay $1700 for a brand new computer you should be able to easily add/replace the Hard Drive