Not that I am aware of, but it is trivial to calculate:
([character SP] - 5 000 000) / 500 000 * ([value of Skill Injector] - [value of Skill Extractor])
Right now that is something like:
([character SP] - 5 000 000) / 500 000 * (749M ISK - 326M ISK) or;
([character SP] - 5 000 000) / 500 000 * (423M ISK)
So a character with 20M SP right now is worth:
(20 000 000 - 5 000 000)/500 * 423M ISK or 12.69B ISK
if you strip the SP to sell.
I guess I can make a chart:
