Oh well, I tested https://wleo.io/leo-arbitrum/
It said the fee is 0.99%, I transferred 2 heLEO and only received 1.54LEO on Arbitrum. It should be 23% on fee, instead of 0.99%

Here is the proof - sent 2 LEO to arbi-leo

Receive only 1.54LEO in Arb wallet

Imagine if I tranferred 2000LEO, I loss 460LEO for the transfer fee.