{
  "delivery_methods": [
    {
      "method": "classic",
      "eta": {
        "max_business_days": 5
      },
      "price": {
        "amount": "0.00",
        "currency": "GBP"
      }
    },
    {
      "method": "express",
      "eta": {
        "max_business_days": 3
      },
      "price": {
        "amount": "9.99",
        "currency": "GBP"
      }
    }
  ]
}

{
  "error": "invalid spending limit: amount has more than 2 decimal places"
}

{
  "error": "cards cannot be delivered to this country"
}