BTW, it appear C-CEX is implementing DCR.
https://c-cex.com/?p=dcr-btc Can't deposit yet. Maybe we can get more arb opportunities with a 3rd exchange.
Try to make an exchange with BestRate.org ..it will select the highest rate among Changelly, ShapeShift, Evercoin, Bittrex, Poloniex and others..Moreover, they won't charge you a lot if you make huge transaction. Alraedy checked