The use of the financial argument against cryonics is absurd.
Even if the probability of being revived is sub-1%, it is worth every penny since the consequence is immortality (or at least another chance at life). If you don't sign up, your probability of revival is 0% (barring a "The Light of Other Days" scenario) and the consequence is death - for eternity.
By running a simple risk analysis, the choice is obvious.
The only scenario where a financial argument makes sense is if you're shortening your life by spending more than you can afford, or if spending money on cryonics prevents you from buying some future tech that would save your life.