A portfolio manager would like to buy 5,000 shares of a very recent initial public offering (IPO) stock. However, he was not able to get any shares at the IPO price of $30. The portfolio manager would still like to have 5,000 shares, but not at a price above $45 per share. Should he place a market order or a limit order? What would be the advantage and disadvantage of each type of order, given his purposes?