Can partial immortalization be permissible to those who can buy it?

In the last philosophical-political section of Pimm I tried to delineate how to protect the right for partial immortalization when the costspimmpermit of the treatment are extremely high. After it turned out that on the grounds of equal dignity it is hard to make the treatment impossible for those, who can afford it, the second question is: Can the continuous regeneration treatment called pimm be permissible to those who can buy it? The answer is yes, because the persons under treatment are moral persons, are not morally in a lower class. Being a moral person is a range property: a person is a moral person or not, there is not any hierarchical moral difference between moral persons. If the treatment would not be permitted to them, this would violate their right to self-determination, and their right to self-determination cannot be legitimately interfered with.

Considering the other 2 hypothetical cost stages of the treatment, when it is moderately expensive, and eventually cheap enough that the state can guarantee it for its citizens, our question about the permissibility do not rise at all, because during that 2 pimm will be an organic and decisive constituent of society.

Third question: could we justify the right for partial immortalization with instrumental premises?

image source