There is a difference between consumer grade hardware and aviation grade hardware. Just the testing to certify that it plays nice with all the other equipment i

There is a difference between consumer grade hardware and aviation grade hardware. Just the testing to certify that it plays nice with all the other equipment is outrageously expensive, not to factor in hardware design (it has to live through going to altitude and back 10 times a day, for years), maintenance, retraining the crews, etc.