Thomas Hobbes

And because the condition of Man, (as hath been declared in the precedent Chapter) is a condition of Warre of every one against everyone; in which case every one is governed by his own Reason; and there is nothing he can make use of, that may not be a help unto him, in preserving his life against his enemyes; It followeth, that in such a condition, every man has a Right to every thing; even to one anothers body.

And as in other things, so in men, not the seller, but the buyer determines the Price.