I'm just shy of 60 years old. I've always been a bit of a gypsy buying, selling or trading a wide variety of things ranging from ridiculously expensive audio gear to classic British auto parts to musical instruments. I see threads like this everywhere with people complaining about buyers on CL or sellers on eBay or everyone on Facebook. We have more ways than ever to connect with potential buyers or sellers and yet it seems now, more than ever, we have this angry zero sum interactions over what many would consider to be a part of normal negotiations.
How did so much of what we do as people devolve into this zero sum thinking? Is it really surprising that the art of negotiation, on just about all levels ranging from dating to politics, seems to be dying? I used to love making deals but now it seems like the level of intransigence is overwhelming, relegating the act of selling into a horrible chore. People need to lighten up and realize that the notion 'a deal isn't a deal unless I stole the thing,' is not really healthy, on many levels.
I wonder why this happened. There's a sub on Reddit I used to follow that was geared around retail customers being unruly towards other customers they mistook for workers. "I don't work here lady" or something like that. I unsubscribed because most of the submissions smacked of miserable folks capitalizing on someone's innocent mistake and really giving them the treatment like OP. Not so much vindication in the face of bad behavior or rudeness, just general "hey I have an excuse to be crappy to this person now" stuff.
It's a real turn off. The guy asked a fair question and tried to negotiate a price break. That is part of business. You can decline and maintain the offer to buy at fun price, or not. Refusing business while the person is en route is just a crappy thing to do.
Advertising that it feels good to be crappy to someone is (arguably) worse.