I just pay whatever they ask without fishing for a discount. When they offer a discount I tell them that’s really not necessary and I’m happy to pay full price. But if they keep insisting, I will take the discount, not going to argue over that.

I disagree with the paying more, that could well be interpreted as offensive, as it makes it seem they need a handout. Just let them set the price and don’t beg/demand/fish for a discount.