The ethical principles aren't standard. For instance, some IRBs will consider a sum of $20 an inducement while others will not, even if the subject is the same.

The ethical principles aren't standard. For instance, some IRBs will consider a sum of $20 an inducement while others will not, even if the subject is the same. If the rest of the studies would be the same, that doesn't make the former study junk and the latter non-junk. Are there journals and sections of the community who look for epistemological validity but with general disregard for the ethics of interacting with the subjects of the study?