One other thing to consider is that except for certain crazy folks
that are after subsets like that, the average collector isn't going to bat an eye at the card and pay a premium for that back. Flipping it could be a problem - keeping is different, obviously.
Its the whole rarity/scarcity conversation all over again. There just isn't the demand unless its a special card, like Speaker or Wood or ... fill-in the blank. For what its worth, just last month an Anon 3 Hooper in SGC 20 only went for $200+ on eBay, so that's a yardstick.
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Mike