Is USDT expensive to transfer?

I've been hearing a lot about cryptocurrencies and their various use cases. Recently, I've been considering using USDT for a transfer, but I'm not quite sure about the associated costs. Could you please explain to me if USDT is expensive to transfer? I've heard conflicting opinions about the transaction fees involved, and I'm trying to get a clear picture before making a decision. Is there a standard fee structure, or does it vary depending on the platform or the amount being transferred? I'd also like to know if there are any hidden costs or additional fees that I should be aware of. Thank you for your time and assistance in clarifying this matter for me.