How to buy celo USDT?

As a cryptocurrency enthusiast, I'm curious about the process of purchasing Celo's USDT token. Could you elaborate on the steps involved in acquiring this digital asset? Specifically, I'm interested in knowing which exchanges support USDT trading, what verification steps are required, and whether there are any specific considerations I should be aware of before making a purchase. Additionally, I'd like to understand the costs associated with the transaction, including any fees or commissions charged by the exchange. Clarifying these details would help me navigate the process of buying Celo's USDT token more effectively.