I'd imagine it's just how scarce the '57 checklists are by comparison.
Except for '57 checklist 1 (which costs the least), there are only around 20-40% as many graded copies out there of each checklist as the '56s. And each seems to be priced in-line with how may copies exist for that particular one
Last edited by cardsagain74; 03-28-2020 at 01:08 PM.
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