My soul is here defined as my supernatural non-material essence as specified by Judeo-Christian philosophers[...]
What do you intend to do with your soul(s) as defined by other schools of philosophy?
By Plato's theory of Ideal Forms, selling your soul would be tantamount to selling bits of the gods - and man has no claim to the gods. I'd advise against this lest you wish to become fate-brothers with Prometheus.
By Plato's theory of Ideal Forms, selling your soul would be tantamount to selling bits of the gods
What? Citation needed.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.