If Apple sells 50% of Macs to the .edu discount market, that's a difference to you of somewhere between 2.5% and 7%.
Or, you can accept that Apple's prices are not set by the market so much as by their marketing department.
e.g. If a company was selling a product at $1000, and wanted to offer a 20% discount for EDU that would be bought by 50% of the market, they would need to raise the price by about 10% to keep the same margin. If only 20% of the market bought the discounted SKU, they could keep the same margins with only a 5% (?) increase in price to the rest of the SKUs.
Suppose I know of a non-Mac that has similar performance and silence for €1000 non-educational. To decide if that meets the requirement I'd need to either look up the non-educational price of the Mac to compare to €1000 or I'd need to look up the educational price of the €1000 machine (if it has one) to compare with €650.
They are more likely to get useful answers if they post the non-educational price so that people don't have to do extra work to figure out if they should respond.