i know okex from my friend, i try to create account and trading on this platform, okex is great platform crypto exchange, many options crypto and have a great display, but i guess to reduce fee for withdrawal, but overall it's oke, also okex have experience to be the best exchange, if okex can reduce the fee, i sure, people and whale will be coming to there, okex also can buy crypto with visa or mastercard, you can try with small balance if you doubt with okex, but i sure, if you have create account and trade on this platform, you will leave other crypto exchange platform do you have