Hi, there
Let’s say you are haggling over a pair of headphones that go for 100 dollars and you wanted to get them for 85. Could you say “Can’t you knock it/them down to 85?” or “Couldn’t you get it/them down to 85” or “Couldn’t I get them for 85?” or Couldn’t you make it 85?” or “Couldn’t you do it for 85”?
Which of these work?
Thank you