Changes to Get prices

the response's body type changed from array to object for status 200

added the required property data to the response with the 200 status

the items response's property type changed from no type to object for status 200

added the optional property items/lookup_key to the response with the 200 status

added the optional property items/metadata to the response with the 200 status

added the optional property items/nickname to the response with the 200 status

added the required property items/amount to the response with the 200 status

added the required property items/currency to the response with the 200 status

added the required property items/id to the response with the 200 status

added the required property items/unit_amount to the response with the 200 status