This is how crazy dex exchanges are most times, they have too high transaction fees just like shapeshift and Changelly instaswap platform, DeFi ( decentralized Finance ) ain't Dex ( Decentralized Exchange )
I really like DEFI, because for the exchange I do not need to go through registration and the KYC procedure. To exchange it, it is enough for me to click a couple of times with the mouse and press 2 buttons on the ledger. But such commissions really disappoint me.