Not Budging
The woman wasn’t willing to budge. Even though Sarah tried to make her understand that the item she was trying to buy was already cheap enough, the woman still wasn’t willing to pay $0.50.
Sarah had no other choice but to suggest to the woman that she come back the next day and try again. But the lady complained that the item in question might be sold out by then. It seemed like she wasn’t willing to give up without a fight.