The wwc network takes too many coins for transction fee. For example, a miner withdraw 13380 wwc and the network takes 80 wwc for transction fee.
The transaction fee is the same as BTC fee: 0.0001
If the coins have a low number of conifrmations, the fee is applied and may be higher. To avoid a transaction fee, let the coins sit in your wallet for few hours to get more confirmations.
But trading on the changes has been fast-paced, and that's maybe why.
We will look into this a little deeper in future review of the code.
Thanks!