Yeah, good point. The market isn't nearly as strong with respect to Astons as it is with d-bag Youtuber cars.

I guess OP could have it appraised by a dealer as if they were going to sell it on commission. There's just not enough comps out there to make a good evaluation. That's usually where the auctions help, but even those sales have seen quite a bit of fluctuation.

 

There are enough comps to get a decent judge of what it would cost to replace on BAT alone, but with any auction, it all depends on who's looking or who's buying at the same time. You're bidding against another party, but also against a reserve. Most fluctuation on similar specs is who's looking to aggressively buy at any one time or is everybody just looking for a deal.

 

Carbon black with 395 miles was sold recently for 204k on pcar platform, black ones are more common and hard to gauge with special colors. My car is magma red and according to Aston Martin Heritage trust they told me it's one of one.

 

That 395 mile car failed to meet reserve on BAT. 395 miles and 14k are a huge difference in the garage queen world. Your spec is much more desirable, it's only the miles that would keep the price down. $165 is probably pretty close.
1 of 1 is more of a vanity thing. It may add a little to the price, or hurt it. Some 1 of 1's were owner ordered in questionable taste.

 

The price you actually paid, bargain or not, is a REAL comp. Listing prices, failed auctions, appraisals, etc., mean nothing. Also, the market for a black, or gray, or silver car is likely stronger than that for a red car, which is why there are so many black, gray and silver cars and so few red cars. A red-car buyer (even if it's his dream color) is going to use black car comps when negotiating. Having said that, the increase in premium for a higher than market agreed price, shouldn't be material, so why not propose $175k and then counter if necessary.