I see your point. However, I have paid a different price from sticker on many occasions. I didn't exchange for kisses and hugs but I have barters. I've even received free service for good reviews! One of my favorites: I was about to buy a vacation on Groupon for several hundred dollars. It was well below market price and I was happy to pay it. Then I saw the "chat" feature. I messaged "I want to buy this vacation, but it is pretty expensive. Can you help me out?". Without further prompting they gave me $20 off. Was the price of that vacation what people paid through the hotel's website, what people paid on Groupon, or what I paid on Groupon? Or is it arbitrary? 😉