Somebody asked a support for adding XCN to C-CEX exchanger. How much does it cost? C-CEX is old exchange, though not with large volumes.
"You can vote for adding coin to our exchange here by depositing BTC to it's address. We are adding 1 winner coin each 14 days. All BTC votes are taking into account after 1 confirmation and rechecked at the moment of voting round finish. BTC sent to voting address are non-refundable. Coin dev must provide block explorer, website or forum thread with wallet links including source code link (github preferrable). Please, make sure coin is compatible with our existing interfaces."