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Posted By: davidcycleback

That the same card in the same holder can sell twice for significantly different prices says that comparisons like these can be problematic. If a single, isolated price per price comparison proves that SGC is worse than PSA, does a similar comparison of the two sales a week apart of the same PSA card prove that PSA is worse than PSA? Obviously not. In fact, if the latter conclusion is illogical (PSA is better than PSA), that would make the former reasoning illogical as well (proves SGC is worse than PSA).

Duly note that I'm talking about a single sale versus a single sale (as is often posted on websites as 'proof' of this or of that), which is different than objectively comparing a wide body of sales.