Your firm is selling 8 million shares in an IPO. You are targeting an offer price of $17.51 per share. Your underwriters have proposed a spread of 8.1%, but you would like to lower it to 7.1%. However, you are concerned that if you do so, they will argue for a lower offer price. Given the potential savings from a lower spread, how much lower can the offer price go before you would have preferred to pay 8.1% to get $17.51 per share? The offer price would need to drop to $. (Round to the nearest cent.)