without acquiring a lifetime license and this begins at around $400 and doesn't require much more as the Exbita team will take care of the client's needs freedom)[/size]
OP, you made it so simple, it seems that having $400 is enough to start an exchange business. Isn't much more money needed for the operational work of the exchange? I believe that anyone who wants to legitimately start this type of business must have a lot more money available, and in that case, a $400 script might not be adequate.
What you present here is not a bad thing as a kind of reference for your (or the team you are in) skills, but it would be completely frivolous for someone to start a business in this way.
We can all see that trends are regularly upgraded, new regulations are set, and significant changes in the functioning of almost every coin. Do you have the capacity to monitor something like that and do regular upgrades? I am talking about a longer period of time.