E93 price difference between PSA/SGC 5 Eddie Collins

Sheez, was watching a few cards in Heritage's auction that ended last night and was surprised to see the price difference between an SGC EX graded Eddie Collins, and a PSA one.
Is this common? I don't pay that much attention. For the price that was paid, this is quite a substantial price difference.
Probably doesn't help they photographed the PSA card askew in the mylar sleeve. But still!
Is this common? I don't pay that much attention. For the price that was paid, this is quite a substantial price difference.
Probably doesn't help they photographed the PSA card askew in the mylar sleeve. But still!
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Comments
Anyway, the SGC went for $1673.00
PSA went for $956.00
<< <i>Shoot. Didn't think of that. I even previewed my post to make sure it would work.
Anyway, the SGC went for $1673.00
PSA went for $956.00 >>
I think the tilt in the PSA holder may have had some impact on the price difference.