Get the price for a name in a namespace
        Reply the price as {'name_price': {'amount': str(...), 'units': str(...)}} (also, 'satoshis': ... if the name is in BT)
        Reply 404 if the namespace doesn't exist
        Reply 502 if we can't reach the server for whatever reason

def GET_prices_name( self, path_info, name ):
        """
        Get the price for a name in a namespace
        Reply the price as {'name_price': {'amount': str(...), 'units': str(...)}} (also, 'satoshis': ... if the name is in BT)
        Reply 404 if the namespace doesn't exist
        Reply 502 if we can't reach the server for whatever reason
        """
        if not check_name(name):
            return self._reply_json({'error': 'Invalid name'}, status_code=400)

        blockstackd_url = get_blockstackd_url()
        price_info = blockstackd_client.get_name_cost(name, hostport=blockstackd_url)
        if json_is_error(price_info):
            # error
            status_code = price_info.get('http_status', 502)
            return self._reply_json({'error': price_info['error']}, status_code=status_code)

        ret = {
            'amount': str(price_info['amount']),        # helps JS clients that can't parse big ints
            'units': price_info['units'],
        }
        if ret['units'] == 'BTC':
            # v1 compat
            ret['satoshis'] = price_info['amount']

        return self._reply_json({'name_price': ret})