Yeah, I understand that. But since we got it back anyway ...
Well, let's break it down:
The computer/electronics systems are going to be toast after sitting in salt water. Any water tight compartments that might have protected them have probably been compromised. Plus they were almost certainly subjected to greater stresses than they were designed to survive.
The RAM is probably more robust that what we used on early generation stealth, but I doubt if it is in any usable condition after the stresses of the crash combined with the salt water.
Maybe some structural components, but they would have to be certified as still meeting spec. Anything in this category would probably be far cheaper to replace.
I just don't see anything that would be cost effective to salvage, except to melt down/recycle as scrap.
I see it as a total loss in terms of $.