My sister had a used truck for sale and she offered me a 25% commission if I handled all the details. I examined the truck, set a price of $500 O.B.O. and posted it for sale. I told my sister that I would accept the first $300 offer that came through the door and she approved. Two days later, I meet with a potential buyer, the truck is examined again, we haggle a bit, agree on a price, shake hands, cash paid, receipt, title and bill-of-sale all signed - deal done as far as I was concerned.
At this point the buyer asked “What was your real minimum price? How low could I have gotten you down if I had been a bit better negotiator and a bit more persistent?”
Honestly, IMHO, that’s kind of a rude question and none of the buyer’s business. I replied in a non-committal way but I honestly don’t think I owed him an answer to that question. How far out of line was this person?