I remember my gran doing it in some street market somewhere. I was little but I remember the guy’s face as he tried in vain to hold the line. He stood no chance as my gran examined whatever she was considering buying, put it down, explained some fact about the stitching or the action and named her price. She had all the facts. She didn’t move. Neither did her offer. I think of her when we haggle. Online is fun but my favourite is when we’re out there, you with your data and arguments. Me with my winning human smile.