The price of your Tampa Airport car rental that you have received on your rental voucher via confirmation email is indeed the final price that will exist till your rental car reservation is valid. Besides the final price, the rental voucher also lists all the taxes, surcharges, and other inclusions that the supplier is providing. In case you opted for a one-way rental and extras like baby seats, portable GPS units, or an additional driver, the final price will be inclusive of these prices too.