Yes, the standard +0.075% is too high. Kucoin, Pemex, and many other crypto exchange services allow clients to deposit crypto which can be instantly exchanged without fees and commission - crypto blog. Robinhood is the most popular commission-free broker.
or can you open a crypto exchange and charge very low commission? you could be quickly billionaire. if you do, please let me join or invest in your company
futures on Binance are 0.08% rounturn for takers and 0.04 % for makers And if you do enough size can go much lower https://www.binance.com/en/blog/421499824684902239/trade-crypto-futures-how-much-does-it-cost