Amazon is now refunding customers up to $51 after its $2.5 billion Prime settlement. Here's how to know if you qualify.

Amazon settled with the FTC for $2.5 billion following an investigation by Business Insider.

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• Amazon settled with the FTC for $2.5 billion last year over claims it mis-sold Prime memberships.
• The settlement included a provision for $1.5 billion in refunds of up to $51 per customer.
• Here's how to know if you're eligible to get a refund from Amazon.

Amazon is refunding $1.5 billion to customers over allegations that it signed up millions...