Good Luck. CP to USPS? First you will spend a week arguing with them over who has to put in the claim (Buyer or Seller). Then they will argue over who broke it (CP or USPS). Then they will argue over who has to pay (CP or USPS). Then after 6 months, you might get lucky. It's honestly better ( ie Not Cheaper) to use a singular company like FedEx when shipping "breakables".
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