If you factor in the change in tax credit I overpaid for my car by about $4,000. More than that probably since it's likely if buying today I would just get the basic autopilot feature and not the full package that includes features I hardly ever use (I use summon once in a while if the car is parked tight, I have used NOA a handful of times but it has scared the hell out of me a couple of times too).
Then you have to factor in the extra taxes I paid on the car ($400) the extra registration costs (extra $160 the first year, extra $130 second year, extra $100 third year, rinse repeat) extra cost for insurance (probably an extra $200 or so through my insurance to insure a $62,000 car than a $55,000 one).
And then the real kick in the nuts is that if the car is worth 50% of MSRP after three years and 30,000 miles then I just lost $4,000 in resale.
So my decision to buy my Model 3 early in the lifecycle has cost me somewhere in the neighborhood of $10,000 actually when you add all this *sugar* up.