I made the mistake of asking for a discount while another customer was also haggling. But I was buying 2 of the same thing.

She said "No I cant do anything. This is the price." But then kinda gave me the eye brow wriggle. I asked again later out of earshot of everyone else, if I can get a discount if I bought 2, and she actually gave me a pretty solid discount.

It was an expensive item that I wouldnt have bought without the discount and I had to buy 2 because I have twins. I would have definitely gone elsewhere without the discount. She gained a customer

So additional LPT: ask out of earshot of other customers..