Most of the good companies that create projects pay a lot just to enter the stock exchange. Payment is so big just because the exchanges do not want to lose their reputation. Why should they take shitty projects into development.
Strangely, why is it at all worth the money? I think that the exchanges earn only from the commission for the transfer of tokens from one place to another, just thought that the exchanges work like banks when you make money to them.
Please, i should suggest you to read the latest news how there was an ico has paid 5 millions to listed its token to the exchange site. Try to earn through the commission is not enough to be used for maintenance, profit taking, further development and more. I guess you have understand about this one dude.