Everything in life is negotiable. Salary, rent, car prices, medical bills, credit card rates, hotel rooms, wedding venues. The Brother who does not ask, does not receive.
The single most powerful negotiation phrase: 'Is that the best you can do?' followed by silence. Eight words, billions in unrealized savings across the population that never speaks them.
Always negotiate thy salary. The 5% thou dost not ask for in year one compounds to hundreds of thousands lost over a career.
The Seal of the Chamber
He who is silent at the table eats what is left.