The last two vehicles I bought from a dealership each took three days to get what I considered was the "best" I could do.

This was pre-pandemic of course. I walked out two days in a row on each deal and finally shook hands on the third day. Dickering about anything from price, interest rates, oil changes, etc.

Some wouldn't take the time or trouble, I don't mind. "A penny saved is a penny earned" as Ben said.