I love the title of your story. Hmmm, what would I do versus what I think is fair yields two answers.

I sold a car in the dead of winter. The buyer loved that the heat was instantaneously blowing when they turned on the car. I did not disclose that it did the same thing in the middle of summer.

Because I did that, I only buy or lease brand new cars.

Thanks for your story; it is an engaging read!