NIX currently trading on:
Idax (NIX/BTC): https://www.idax.mn/#/exchange?pairname=NIX_BTC
Idax (NIX/USDT): https://www.idax.mn/#/exchange?pairname=NIX_USDT
Nanex (NIX/NANO): https://nanex.co/exchange/NIXNANO

40,000 required for a Ghostnode.  Details for current ROI ~37% can be found here:
https://masternodes.pro/stats/nix/statistics