Running an exchange It's not a big deal. Many people sell the script for a few couple bucks and everyone can run his own exchange, but what after start? What when they need an update, any new changes, fork, swap or any change? What about security bugs? if someone does not have enough knowledge or team behind them, they don't need to think about buying exchange script, software or whatever. Good exchange is not only web software where is possible to "trade". there is much more.