How much does it cost to buy USDT?

Excuse me, could you possibly assist me in clarifying a question regarding the cost of purchasing USDT? I've been following the trends in the cryptocurrency market and have been considering adding USDT to my portfolio. However, I'm not entirely sure about the current exchange rate or any associated fees that might apply. Could you please provide me with an estimate of how much it would cost to purchase a certain amount of USDT, taking into account any market fluctuations or transactional costs? I would greatly appreciate your help in this matter. Thank you in advance for your time and assistance.