RoboForex Ltd with support from MQL5.community (MetaQuotes Software Corp.) staring April 11th 2017.
You can use a free coupon to pay for any MetaTrader4 trading signal with a subscription fee up to 40 USD.
The subscription allows you to automatically copy other traders’ transactions to your account.
To receive a coupon, you have to deposit at least 300 USD to your trading account.
Click here to open an account and deposit now
Full terms and conditions here.