@john-norris Absolutely this, plus for me, I have trouble distinguishing between a good number two car and a number one car, I know it can make a huge difference in hammer price (or sometimes not, as there are many bidders without the ability to make that fine distinction too, which is part of why the guessing is a bit of a crapshoot).
The noticeable difference (for me anyway) between a $200,000 and $300,000 series one E-type is negligible, but to some obviously worth quite a bit.