def get_random_urls(prefix='http://www.example-shop.com/product/', size=1000, start_index=None):
    """
    Create random url endpoints.

    Args:
        size (int): number of urls to be created.
        start_index (int): optional argument for starting number.
    """
    
    if not start_index:
        start_index = 1     
    end_index = start_index + size
    
    urls = [prefix + str(url_suffix) for url_suffix in range(start_index, end_index + 1)] 

    return urls