The levels of uncertainty make this really hard to work with.

On the one hand perhaps it works and the person gets to live for billions of deeply fulfilling years, till the heat death of the universe experiencing 10x subjective time giving trillions of QALYs.

Or perhaps they get awoken into a world where life extension is possible but legally limited to a couple hundred years.

Or perhaps they get awoken into a world where they're considered on the same moral level as lab rats and millions of copies of their mind get to suffer in countless interesting ways.

so you end up with a very very wide range of values, negative to trillions of QALYs with no way to assign reasonable probabilities to anything in the range which makes cost effectiveness calculations a little less convincing.