All you have to do is login on CoinDeal during the time of the promotion from 06.06. to 19.06., then make sure your account is verified. After these two steps, you can freely trade on market ETH/BTC with 70% lower fee!
6th June - 19th June 2018!
Don’t wait too long and start trading now! After the end of the promotion, the fee will get back to its regular level.
https://frontend.coindeal.com/market/markets.html
Please note that every user has to be verified!