What does it mean to be negotiated “fairly”? If you don’t like the rate, you come with a counter proposal, for which ideally you have leverage. The leverage is another job offer you found. If you don’t have leverage, you could negotiate a few other ways but they’re less effective. In the end, if you feel you can’t get a competing offer and you can’t wait, essentially you have to accept the terms, but also you can continue the search, and quit when you find something better. This is why companies don’t like to lowball you - they don’t want you to come in with one foot out the door. So one of those “less effective” ways is to explain honestly how their offer might not be sufficient for you to be able to focus on your work without worrying about rent and food. It’s in the best interest of both of you for you to focus on work.