A hundred thousand dollars is enough to start a casino in it self, with this amount of money, I believe one can hire well qualified and highly professional developers and programmers who would build something really outstanding.
But then, the reality is that it doesn't end there, taking a look at what the user I quoted below mentioned..
How much about script, servers, license, office, regulation, team, promotion and etc.
It is eminent that a hundred thousand dollars won't go far, setting up a standard casino with all the good features and many games, plus license and every thing required to really attract serious gamblers would require a much more higher amount of money, but like every other business out there, one can always start small and expand while growing.