With education discount, the 128GB OEM SSD upgrade is $90. The Samsung 470 128GB SSD on NewEgg is $229. I just ordered a new MBP with a standard harddrive because I figured I could upgrade to a SSD myself and save some money. Did I make a mistake? Is there a $130 differenc between the two? And if I ordered the new MBP yesterday, is it too late to call and add the SSD?