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by speedplane 2742 days ago
> So what exactly constitutes an error then?

It's standard contract law. Every time you purchase anything, you're making a legally binding contract, even buying a sandwich at a shop. Under centuries old contract law, there must be a "meeting of the minds", both parties must understand what they're getting into. If one person makes a obvious mistake (e.g., pricing gas at $0.02/gallon), there is clearly no meeting of the minds, the contract is void, and the seller can ask the buyer for their money back.