public void NotifyUsersAboutPriceForHouse(int houseId)
    {
        var price = _priceService.GetHousePrice(houseId);
        var users = _houseService.GetUsersInHouse(houseId);

        foreach (var user in users)
        {
            var emailAddress = _userService.GetEmailOfUser(user);
            _emailService.SendEmailToAddress(emailAddress, "Your House Price is:" + price);
        }
    }