I have changed the ways the BTC withdrawal fees and now we take the fee/kb from https://btc.com/stats/unconfirmed-tx .

I was about to say they got much lower now, but the values got high again. Right now the instant withdrawal fee is high again at 0.001680 BTC and batch is at 0.00084000 BTC as the mempool becomes full again :-(

Cheers,
Ethan