Newbie seeking advice on evaluating auction

[Smarti5051]

I am hoping to get some insight into what I might be missing on an Ebay offering I have been monitoring. It is a BIN for a PSA 1 52 Mantle. Here is the listing:
https://www.ebay.com/itm/22479913547...h6br2&LH_BIN=1

Looking at the card (not the holder), to my old eyes it looks pretty nice as far as centering, coloring and corners compared to most of the other PSA 1s (and even 2s) I have seen. Most of the lower grade Mantles look like they were extremely off center or held against a belt sander. Am I missing something obvious (or even subtle) that makes this an eyesore to the vintage collectors here? I am not asking if it deserves better than a PSA 1, but rather what is it about the card that would give you pause?

Separately, the price seems to be pretty "fair" based on what I have seen other similar PSA 1s sell for recently (higher than some bad looking 1s, but in line with similar PSA1s that sold at auction houses (after buyer's premium) based on PSA auction price tracker).

I guess my question is: how does this card with 146 watchers of one of the hottest cards in the hobby just sit for weeks? Is there something about the seller or listing that is likely causing it to sit? Is it just not good value for the card? If I was your friend and just wanted to add a good looking Mantle and hold it for 20-30 years, would you suggest jumping on it or wait for a better or cheaper one (since I have a long wantlist and plenty of time to act)?

I apologize if I come off as clueless, but I am new to the world of buying 5-digit sportscards (the few I have were MUCH cheaper when I acquired them years ago) and would like to avoid being the idiot drastically overpaying for a PSA 1 card.

PS - I swear this is not my card and I am not trying to drum up interest in it. Part of my fear in even posing this question is that if it IS a good deal I might miss out by drawing attention to it. But, I figure the odds a 52 Mantle gets listed on Ebay and flies under the radar for weeks is fairly low.