Basically you can buy bitcoins (for $450 each) at
https://www.coinbase.com and sell at
https://btcto.money with the promo code
xZy15wKq (for $515 each). But you can do it only once (the offer is limited to 1 use per paypal account).
If you have enough Bitcoins you can make some good profit.
For example buying 20 Bitcoins at $450 and selling them at $515 will bring around $1300 profit.
unless the price skyrocket above 515, and you're forced to buy agian to not miss another pump, at that point you're losing money, i would avoid those daily trading for earning few % in a up trend
OP, there is no way they do not have any fee,they live with that, you can check your order transaction to see it, i'm also not buying that chiense exchange have no fee..