Really, Guys? An aircraft was lost during the development of a new type. That, of course, has never happened before, so I can see why, months after the event it's suddenly attracting as many rubber-neckers as M1 pile-up.
LO, as you know, nothing is written off until it's examined and evaluated. I agree, it looked like it at the time, but if all investigations were carried out by the likes of us from afar, watching a YouTube video, we probably wouldn't be as smart as we think we are.
As to what it costs, too late. Now go and add up the cost of all the other accidents, put all that money in a pot and donate it to the defence budget.
Why not do something constructive instead and guess how the actual problem is being fixed?