c-cex.com can be a good exchange too and if XOC has good volume there it could be much easier to reach trex or polo later.
This is a good solution
Where do you see good volume?
2 btc daily it's good volume for you?
Good luck then.
Bittrex ask 3 btc to list coin.
Not to list a coin but to organize ICO on their platform. People don't read carefully.