Are you sure, that this is real WanChain coin? They must have own blockchain (not ERC20 tokens)? How this tokens trading now? Ot threy will swap after they will launch mainnet? They cant burn this tokens. It will be scam.
Wait until mainnet is released and the official Wancoins (not these ERC-20 tokens as they are ONLY useful for tokensale participants).
No trading should be done before. The swap will be the exact amount boight at the tokensale , no more.