Yes true, this is a great project, I like use https://yo-ex.com/ because rich features, sign up not more 30 seconds: https://yo-ex.com/signup and also very fast, so when we click the price we will get real price and this is the official confirmation about the feature:

Speed
Our system is built from the ground up with performance in mind and delivers ultra-fast response and order matching times, ensuring that you never have to wait when submitting orders.