If you value all human life (including your own) equally, it's not the best use of ones money. But holding constant the amount of money you spend on yourself, cryonics might make for an excellent investment. I'm an Alcor whole-body member.
Sometimes people will argue that if you would pay a lot to save your own life from a fatal illness, that means you don't value lives equally but prefer your own, and therefore you should sign up for cryonics. But this argument seems a bit problematic to me, because it assumes my preference to save my life in the case of the fatal illness is ideal. In reality it might not be ideal at all. I am certainly not Zachary Baumkletterer, but it's likely I would be a better person if I were. If this is the case, the problem is not that I am unwilling to sign up for ...
I wrote an article about the process of signing up for cryo since I couldn't find any such accounts online. If you have questions about the sign-up process, just ask.
A few months ago, I signed up for Alcor's brain-only cryopreservation. The entire process took me 11 weeks from the day I started till the day I received my medical bracelet (the thing that’ll let paramedics know that your dead body should be handled by Alcor). I paid them $90 for the application fee. From now on, every year I’ll pay $530 for Alcor membership fees, and also pay $275 for my separately purchased life insurance.
http://specterdefied.blogspot.com/2015/04/how-to-sign-up-for-alcor-cryo.html