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boxingcardmanThe law is actually more complex. A court generally will enforce a contract despite a unilateral (one side only) mistake unless the mistake is an obvious one to the point one where a reasonable person would realize it was an error. Offering a $1,000 card for a $1 BIN would very likely not be enforced in court. Offering a card that is perhaps $50 or $100 underpriced for $150 would likely be enforceable because the mistake is not obvious.
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