OWC certifies 480GB Mercury Aura Pro SSD for 13-inch MacBook Pro with Retina display
 

The inside of a MacBook Pro certainly isn't for the faint of heart, but if you're willing to pair your recklessness with a side of wild abandon, then you might just have what it takes to upgrade the storage of the Retina-equipped 13-inch model. OWC is more than willing to test your limits with its 480GB Mercury Aura Pro, an SSD module that's now certified for use with Apple's latest laptop. While its $580 price will deter many, the 480GB option compares favorably to the 512GB upgrade from Apple, which rings in at a healthy $800. OWC says that additional capacity sizes will be announced this November, which is reason to remain hopeful if this one has priced you out of the market.

http://www.engadget.com/2012/10/31/o...ok-pro-retina/