Suprised that some people would jump all over this guy's offer to sell his car.
Why argue that his price is not fair if someone would like to buy it, for reason of their own.
Perhaps they want a car they can have tomorrow, don't qualify for the tax credit, or any other reason.
If the OP does not get his full asking price, then he can always come down, but it is his choice.
Same going to a typical automotive dealership. Some vehicles will be priced over sticker, some at sticker and some lower than sticker. Who is to say what is the perfect price.
Even Tesla often changes their pricing, with some getting discounts, and others paying full boat.