withdrawing coval from trex to counterparty wallet --> withdrawing btc to counter wallet to have 0.0005btc fee to swap coval xcp to coval ERC-20, the total fees = 0.0005btc (withdrawin' from bittrex) + 0.0005btc (to swapping) = 0.001 ~ $10.6, or more if you send remain btc in XCP wallet to another.. fock it! I hope it will pay off.