>>From a public health POV the unvaccinated should be tested more often, and encouraged to get tested. Charging for tests is exactly the wrong thing to do. Reducing testing amongst the unvaccinated will increase COVID amongst them and their contacts, lead to more cases of serious disease and provide more opportunity for viral mutation.
Unless they're unvaccinated because they already had it, which used to be a reasonable stance and itself can be detected by testing some of the time, or most of the time if only an inexpensive reliable t-cell immunity test existed.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1