The easiest way to create room in the box is to remove and post about the cards that were in the hard top loaders. Which I'm doing right now.
And there were no cards of this on COMC.
Nor on ebay, where the only one was part of a $13.00 team set.
But I could have picked one up for $6.50 at sportlots.
So maybe that wasn't a re-used holder after all.
And now, the box seems emptier.