I could imagine you would have to replace all the interior instruments and what not, landing gear.. Obviously two ejection seats. IMO I would be surprised if its a write off. It may still need a million bucks of work done to it, but in terms of damage, it looks pretty light. What does an ejection seat cost these days, I heard it was hundreds of thousands. Then there was what ever the engine fault was, may require new engines, but again, even if there was no ejection, that would have been required.
The damage seems light particularly compared to the other growler.
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UPDATED 29/01/18 with new photos: An apparent engine failure has seen an RAAF EA-18G Growler catch fire after an aborted takeoff from Nellis Air Force Base, Nevada on Saturday morning…
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Much more damage, much more serious, large fire extensively damaging the plane, that was always going to be a big job. Could always be worse.
Given how extensive that fire was, ejecting would seem like a completely prudent option.