HTTP/1.1 200 OK
Date: Thu, 25 Jul 2013 07:15:16 GMT
Content-Type: application/json
Content-Length: 173
Vary: Accept-Encoding
Connection: close

{"postage_result":{"service":"Large Letter","delivery_time":"Delivered in up to 4 business days","total_cost":"1.20","costs":{"cost":{"cost":"1.20","item":"Large Letter"}}}}