Right now AVOID - These exchanges have refused to update to the latest wallet.
Buy from here and you WILL lose your coins
Bleutrade - https://bleutrade.com/exchange/MUE/BTC
CCEX - https://c-cex.com/?p=mue-btc
Yoshit - https://yobit.net/en/trade/MUE/BTC

Right now USE
https://bittrex.com/Market/?MarketName=BTC-MUE
https://www.coinexchange.io/market/MUE/BTC
https://altex.ws/Market/Trade/?Pair=MUE/BTC
https://bittylicious.com/