This is probably a mistake and i am betting it will get corrected at some point but right now on the education store it is cheaper to order the base rMBP and upgrade the processor and storage then it is to buy the higher end model on it's own.
The difference is the 10% that apple gives on upgrades on the education store.
If you call them and point it out they will also refund a previous order.
The difference is the 10% that apple gives on upgrades on the education store.
If you call them and point it out they will also refund a previous order.