Hi. I'm trying to evaluate the pricing on the refurbished units of the older 11" MacBook Air and wanted to get the original pricing as a baseline comparison. I remember the base model was $999 (1.6Ghz i5, 2GB ram, 64GB SSD, 256MB video memory), then I think for $1199 you got 4GB of ram, 128GB SSD, and 384MB ram for the video. Was it $300 extra for the 256GB SSD? And how much to upgrade to the 1.8Ghz i7? This is just baseline retail pricing with no educational discount or anything like that. Thank you!