Animalclub...
Does one get paid what the value of the job is to the company
Does one get paid the value of what one thinks of one's self worth
Does one get paid what the company can afford.
Absolutely none of the above.
One gets paid what one can negotiate.
If you're not in a good position to negotiate, don't expect to get much. If you're in a good position, you can negotiate a bucket load. Knowing one's position comes easy to some and difficult to others.
Cheers