like I said, I will accept the the sticker may or may not establish FMV. That is a separate issue altogether but I would suggest if the tax payer wants to claim anything other than sticker (MSRP) they will have to support their claim of a lesser value based on other sales of that particular car from a dealer being less than sticker.
using your argument, if I had the ticket and for whatever reason decided I wanted to sell it. I needed $5k to get out of the country and this was my easiest way although not the only way. Based on your argument, that would put the value of the car at $5k.