LONGECITY

I understand that they will initially be more expensive and progressively decrease in cost, so what will they cost at different times?

I don't think anyone knows with any degree of accuracy at this point.  We also don't really know how wealthy humankind will be in the future, or how that wealth will be distributed. 

I don't think anyone knows with any degree of accuracy at this point.  We also don't really know how wealthy humankind will be in the future, or how that wealth will be distributed. 

Doesn't anyone have any idea? Will it be more or less than a billion USD? More or less than 1 USD?

Initially, it will be thousands to millions.  Later, hundreds to thousands.  (USD)

Initially, it will be thousands to millions.  Later, hundreds to thousands.  (USD)

What are your sources?

Noone can say how much will it cost, since noone so far is immortal If You want to periodically rejuvenate Yourself, then it will be very expensive, and You will have to pay these alot of money periodically. If You want to grow organs from stem cells, then the price will be the price of the growth of all of Your organs + the price of all the necessary transpalnattions.

I'll use SENS as an example because it's the only proposed treatment to have some scientific backing at this point - it's targeting six factors, it ranges from what I guess is something that will be trivial in the future like keeping the extracellular structure in good shape to pretty exotic things like removing your telomere lengthening genes - gene therapies are on an experimental level right now so it's hard to say how much they will cost when they become widespread. Also there's RepleniSense, getting organs grown and transplanted into you will probably not be specifically cheap either. Most of these will have to be done periodically.

So let's say all the treatments work and are available at the same time - if you get the whole personalized course I'd say It'd run you a hefty sum. It won't be a small number, especially in the start. A decade later when they setup their own clinics and infrastructure it will definitely be more affordable.

It seems, that the price of the anti - aging treatment will depend on what exactly will it be. So... to answer that yu will need to know all the possible treatments (ways to defeat the aging) and to calculate each of them. Then it will be possible even to be listed by price - from the lowest to the highest and will be able to be said: Staying yound would cost from ... to ...