I think the casino will not want to say whether they are buying a source code or rent from the other gambling provider because I believe that will be their secret, and they don't want the public to know one of their secrets. Besides that, I think they will not tell us how much money they use for the source code, and they perhaps only tell that they spend some money to rent the code. At least, they need to keep one of the secrets for their business because they don't want their competitor to know about that secret.
This is probably why so many people prefer Dice games over Slots. You just don't really know your Odds in Slot Machines, it's all about pictures and design but not about the payouts. Especially if there are more than 25 Slot games available, it's very hard to see any differences. For me Slots are only really attractive if you get some sort of bonus. I don't know why but I have been so much more successful with dice games than with slots.
It all depends on what do you mean by being "successful" with your gambling. Dice has lower house edge than that of slots, no doubt about that. But trying to make money with gambling is not advisable, even with dice, even with games with the lowest house edge possible. If you want to stay safe, seek for entertainment, not for profit. And slots are surely more entertaining than dice, don't you think?
