Of course there are, but they often deceive their users with various hidden commissions or sudden restrictions. In general, the most famous and most liquid exchanges, on average, commissions are about the same. At least I did not see a straightforward difference in withdrawal fees, the commission maker, taker, etc., due to the fact that exchanges are constantly competing with each other. If you are not satisfied with the commission of large and well-known exchanges and you try to find where the commission is cheaper, then be prepared to expose themselves to additional risk, which will not be discovered immediately, but much later.