Individual buying criteria

Individual buying criteria could be anything. The only thing they have in common is that:

• they have to be stated explicitly, so there is a chance of finding out whether something satisfies that criteria or not
• determining whether they are met has to be either up to a group or faction or organization the individual trusts, or, done by them with the detailed data for every single item (which very few people will probably really be able to do)

Criteria could be medical (including dietary prescriptions, allergies), ethical (a comprehensive outcome that includes some things you don't like and won't be part of), political (like ethical but could include rejecting things that come from types of companies or even types of countries since they tolerate or work with those who violate your ethical criteria), social and ecological (like the buy local imperative).