https://www.psacard.com/pop/
That's a link to the PSA population report.
Always a good idea to fact check a detail like that. I find mistakes about 10% of the time.
Just had it with a Ryan card - seller described it as "PSA 9O/C(off center) - only 1 higher". Later in his description he claims "this is one of the top 2".
If you look at the population there is 1 unqualified PSA 9, 4 qualified PSA 9's, 9 unqualified PSA 8's.
He originally had it listed as "the highest graded" - claiming even though it was qualified O/C it was still a "9" - the highest graded- I took him to task about it and he ended up partially changing his description. I still believe "One of the top 2 is misleading", as there are 4 qualified 9's making his card 1 of the top 5 at best. Further, PSA in their set registry actually deducts 2 full grades for qualified cards - so a 9 O/C would only get credit as a 7 in the set registries.
Bottom line, unless it os someone who has become a trusted seller to you - check the facts.