At this point I don’t see how any of us can assume the TSB applies to this car or whether the diagnosis is even legitimate. None of the symptoms, A/C history, or the reasons for the high price tag has been provided.
I’m in agreement that Black Death doesn’t necessarily mean every component must be replaced. Quite a few years ago the A/C in my old Sable suffered Black Death and since the car had been pretty much relegated to a daily beater by then instead of a family car I had no intention of spending a fortune on it.
Boneyard compressor for 50 bucks, 40 or so for a new accumulator, small amount for chemicals/refrigerant, and it provided ice cold air (as in 30 degree air on a 105 degree day) for a number of years afterwards.
A/C problems are often misdiagnosed and even if the point is made that it needed all major components (not likely) the sticker price is way high.