Well, I haven't used them but good luck using them and wishing you that everything's going to be good there. The fee seems to be low 0.2% and for bitcoin it is 0.00006404 which is fairly low.
If you are willing to risk. We'll if its just a few bucks worth of BTC that you wouldn't mind losing. I'm not aware about the exchange but certainly its the first time I've heard of it. The general rule of thumb which I always read here in the forum is to always do it in the known exchanges, it doesn't matter whether you pay $5 for the withdrawal so long as you don't lose it all. Stay safe.