For the vast majority of Zeenut collectors I know, grading is not a "thing" except for rare, valuable and/or HOF cards.
I've purchased (many dozens of) tabbed Zeenuts over the last ądecade, and you are correct in that a good percentage of them have been graded, many more by SGC than PSA.
A year or two ago, I basically made an executive call and liberated all of my Zeenuts that graded out below 3.0 / Very Good. The weight and storage of all that plastic is just silly, I think. Tabbed Zeenuts that are VG/EX or better are hard to find, and your example is quite nice.
But we've already established you probably slightly overpaid for the card. And we're collectively telling you here that most of us as buyers of this sort of thing would not pay more for the card because it was graded.
So there you go
