with volume increasing lately, it would be welcomed to more exchanges, like Bittrex for example.
Most of the Exchanges want Money to list Coins, for instance Novaexchange, one of the cheapest:
The only other major fee with Novaexchange is to list a new coin. If you made a new coin and want to list it, then Novaexchange has a Pay to List service. Currently, the platform charges a setup fee of 1 BTC along with a yearly fee of 0.25 BTC. The yearly fee is waived for coins that have a trading volume of at least 0.2 BTC over a 3 week period.