Perhaps, within hundred years, cryonics will become more popular and the economy of scale will bring the prices down. By that time, I hope to be (safely) in my capsule at the bottom of the sea
Right now, cryonics is not unavailable just because of high cost, but also because there is no way of getting (reasonably) good preservation if you are far away from the providers or areas where stand-by teams operate (and most people are). There can be legal issues, hostile environment, uncertainties which concern the conditions of death, etc. If one reads the case reports from Alcor or CI, it is obvious that even those "hard-core" cryonicists, which have re-arranged their lives around the idea, often encounter unexpected problems and get poor preservation.
I am not a great believer in the rapture (singularity), and I don't think that significant life-extension is at hand. It would take a colossal amount of effort and resources, which is totally unrealistic. One solution may be to engineer a virus that infects the nervous system and induces existential despair - that would drive people to seek solution for mortality. In the world as it is, most people are very unimaginative and quite content to go into the silent night after a few miserable decades of boring life.
Finally, it's not the practical part that should concern us. There are ways to suspend the brain in time and preserve identity, but would the post-humans care to bring back such meager minds? I discussed some possible reasons that they might have to do it, but it is all fanciful speculation and gamble. My mental strategy is to just irrationally hope when the mood allows me, and suppress the doubts, just like the religulous people do.