Unfortunately, that's the only one of its kind I've seen. I have seen many other custom made PRS truss rod covers though:
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=custom+prs+truss+rod+cover&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=custom+made+prs+truss+rod+cover
Yep, fit and finish definitely make a difference. One thing I didn’t see mentioned that makes a difference to me is fretboard binding which you don’t typically see on less expensive guitars.