>Either way, since utility is unique up to scalling (e.g. Johnny could get as many times of it from a sandwich as Paul does from a near-identical sandwich), at least in choice theory "worth" is closer to having an "inherent" character than otherwise. Though this is somewhat of a stretch because these kind of comparisons are invalid.

Johnny, who is dying of thirst in the middle of the Sahara desert, would get much more utility from a bottle of water than Paul, who is sitting in a bathtub in his apartment in NY. So what's the worth of the bottle of water?