I think they are asking for a huge amount of Money if they are respectable enough like binance, gate.io or kucoin.
But for other small exchanges probably way cheaper.
Yeah, small exchanges are far cheaper and this is the tactics that binance and all those big exchange too are using to attract genuine projects to themselves, you will notice that major of these small exchanges re full of cheap coins ,because even an ordinary student could just come up with an idea now and feel like raising fund, it would be easier for him to do so because the amount is cheap on those low exchanges, but with big exchanges, only genuine projects can afford to list on them, although we have some of those exchanges that their fee is just too much, and I think that they are just exploiting, but for binance, I think the fee is still fair enough and is worth it for the services that will enjoy from whatever platform binance is giving to them to work with.