I am personally using Binance and the fees are 0.1% if u trade under 50 BTC /month . Is there a cheaper alternative ?
Not unless you either
a) Qualify for a higher trading volume fee concession
b) Use an exchange that is just starting out that has a temporary fee discount (you'd be sacrificing spreads, since there is little to no liquidity on these markets)
c) Use a derivatives exchange where you can get maker fee rebates
At the end of the day, 0.1% per trade is more than enough for my personal use. You probably will get ripped more by their 0.0005 BTC withdrawal fee than their actual trading fees.